CESSNA 336/337 AIRCRAFT "STRUCTURAL" SERVICE DIFFICULTY REPORTS (SDRS) In response to the FAA’s National Aging Aircraft Program, aircraft manufacturers are considering development of Supplemental Inspection Documents (SIDs) specifying inspections and/or modifications to maintain the airworthiness of aging aircraft. One of the aircraft models that may come under an SID program is the Cessna 336/337 (Skymaster) aircraft. This study and report has been prepared by ConsultResearch Inc.1 to aid Cessna in the development of such supplemental inspections.
(Complete Draft, Rev. 3, Sept. 11, 2009)The work, done primarily by Ernie Martin2, involved compiling approximately 1,000,000 Service Difficulty Reports furnished to the FAA since the early 1970's, filtering to extract only those involving 336/337 aircraft, and analyzing the data to retain only those related to structural aspects or aging effects. We erred on the side of inclusion, so that a report where the decision could go either way was retained.
The retained reports for the Model 337 were then organized by area of the aircraft. Within most areas, those reports we deemed more relevant to possible SIDs appear first, and those we judged less relevant then follow; the reports appear in reverse calendar order, starting with the most recent within each group. Those reports that deal with two adjacent areas appear twice, because in the table they are shown in both areas. The figures (which come from the Illustrated Parts Catalog) were added by us for convenience, so that part numbers in the reports are quickly identified.
The retained reports for the Model 336 were so few that they appear in a separate table at the bottom, unarranged by group, newest first.
The number at the start of each row is for internal reference and is not relevant.
RELATES TO FUSELAGE (excluding door mechanism and pedal area) Row Date Of Report Operator Control Number Segment Date Of Occurrence Aircraft Registration Operation Type Descriptive Name Of Part Defective Location On Aircraft Failed Part Condition Part Total Time Part Total Time Since Overhaul Component Manufacturer Component Manufacturer Model Component Manufacturer Number Stage Of Operation Severity Factor Aircraft Manufacturer Aircraft Manufacturer Model Aircraft Manufacturer Number Precautionary Procedures Nature Of Condition zxcvbRemarkszxcvb 46 2003-05-15 CH1A200393049 AIRFRAME 2003-04-24 293 A STRINGER FUSELAGE CRACKED INSP/MAINT CESSNA T337G P3370226 NONE OTHER STRINGER 26R CRACKED AT BS 46. 22 2001-08-08 AUS20010417 AIRFRAME 2001-05-04 G FRAME FUSELAGE CORRODED INSP/MAINT CESSNA 337 NONE OTHER (AUS) RT ROOF SUPPORT FORMER LOWER EDGE CONTAINED INTERGRANNULARCORROSION. 31 2000-04-25 20000417SH010 AIRFRAME 2000-03-21 53522 G SKIN FUSELAGE CORRODED INSP/MAINT CESSNA 337G 33701680 NONE OTHER DURING A 100-HOUR INSPECTION, A SECTION OF MATERIAL USED FOR DAMPING ''OIL CANNING'' WAS REMOVED FROM THE INTERIOR FUSELAGE SKIN BELOW THE AFT SIDE WINDOW. HEAVY CORROSION WAS FOUND ACROSS THE ENTIRE AREA COVERED BY THE MATERIAL. THIS MATERIAL IS USED EXTENSIVELY THROUGHOUT THE AIRFRAME AT MANUFACTURE. (X) 26 1989-09-12 NM018995643 AIRFRAME 1989-08-26 6297F G CABIN ROOF FS 135.45 CORRODED 0 0 INSP/MAINT UNCOMMON CESSNA 337A 3370297 NONE OTHER THE CABIN ROOF INTERIOR FROM FS 135.45 TO 165.09 AND LBL 13.75 TO RBL 13.75 WAS CORRODED UNDER THE INSULATION TO THE EXTENT THAT THE SKIN REQUIRED REPLACEMENT. THREE OF THE STIFFENERS WERE LYING LOOSE ON THE INSULATION. APPROXIMATELY 40 PERCENT OF THE SKIN RIVETS WERE HELD BY THE EXTERIOR PAINT ONLY. SUBMITTER RECOMMENDS THAT THIS AREA BE MADE A REQUIRED AREA FOR INSPECTION. 28 1978-04-14 Z197810400035 AIRFRAME 861CP SKIN CABIN OVERHEAD CORRODED 0 0 INSP/MAINT OVER 24 MO CESSNA 337 3371060 NONE OTHER EXTENSIVE CORROSION BETWEEN CABIN TOP SKIN AND SOUND DEADENING MATERIAL 11 1977-08-16 Z197722800036 AIRFRAME 53480 INTERNAL BAFFLE CORRODED 425 425 INSP/MAINT OVER 24 MO CESSNA 337G 33701651 NONE OTHER CORROSION DEVELOPED UNDER INTERNAL BAFFLE 4 1977-07-26 Z197720700027 AIRFRAME 2FOR SPAR FUSELAGE CRACKED-BUCKLED 900 900 INSP/MAINT OVER 24 MO CESSNA 337G P3370029 NONE OTHER THE CARRY-THRU SPAR ASSEMBLY CRACKED AND BUCKLED. 24 1975-10-08 Z197528100052 AIRFRAME 2629S LINE TOP REAR CABIN HOLES 789 789 INSP/MAINT OVER 24 MO CESSNA 337 3370929 NONE FLUID LOSS MOISTURE IN HEADLINER CAUSING CORROSION & LEAKING OF FUEL LINE.NEEDS RUBBER SLEE VE OR PAINT.ALSO TOP SKIN LAP SEALD (Less significant items below) 27 1994-07-19 94ZZZX4012 AIRFRAME 1994-07-01 92GD G FIREWALL AFT ENGINE RIVETS PULLED 5,096 0 INSP/MAINT NEVER CESSNA P337H P3370343 NONE OTHER UPON C/W 100-HOUR ANNUAL INSPECTION, FOUND SEVERAL RIVETS SECURING REAR FIREWALL WERE BROKEN AND PULLED THROUGH FIREWALL. ALSO NOTED ENGINE MOUNT BOLTS DID NOT HAVE CORRECT HARDWARE AND WAS NOT TORQUED PROPERLY WHICH CAUSED A VIBRATION WHICH COULD HAVE CAUSED RIVET FAILURE. ENGINE BAFFLES CRACKED AND DAMAGED. 36 1988-03-22 CE658876325 AIRFRAME 88H G SIDE WINDOW UNBONDED 4,677 4,677 INSP/MAINT NEVER CESSNA T337H 1947 NONE OTHER, UNKNOWN FOUND WINDOWS HAD COME UNBONDED FROM FUSELAGE PREDOMINANTLY AROUND CORNERS OF WINDOWS. THIS ALLOWED RAIN WATER OR WASH WATER TO LEAK IN AROUND WINDOWS AND SOAK UNDERLYING INSULATION CAUSING CORROSION OF FUSELAGE STRUCTURE. NOTE - THESE WINDOWS ARE ONLY GLUED IN WITH PRC TYPE MATERIAL. THE SEALANT DOES NOT SEEM TO ADHERE WELL TO THE SMOOTH SURFACE OF THE WINDOW. 27 1983-07-15 SW99198381529 AIRFRAME 86106 G OUTER DOOR SKIN CABIN DOOR CORROSION 2,205 2,205 INSP/MAINT NEVER CESSNA 337D 1083 NONE OTHER FOUND CORROSION ON INNER SURFACE OF OUTER DOOR SKIN, CAUSED BY WATER ABSORBING INTO FIBERBOARD BACKING.
RELATES TO WING (including strut, but excluding aileron) Row Date Of Report Operator Control Number Segment Date Of Occurrence Aircraft Registration Operation Type Descriptive Name Of Part Defective Location On Aircraft Failed Part Condition Part Total Time Part Total Time Since Overhaul Component Manufacturer Component Manufacturer Model Component Manufacturer Number Stage Of Operation Severity Factor Aircraft Manufacturer Aircraft Manufacturer Model Aircraft Manufacturer Number Precautionary Procedures Nature Of Condition zxcvbRemarkszxcvb 21 2005-02-01 CA040930002 AIRFRAME 2004-09-29 G SKIN LT WING CRACKED INSP/MAINT CESSNA T337G NONE OTHER (CAN) DURING INSPECTION, CRACKS WERE DISCOVERED AT THE IB END OF THE LT AND RT UPPER OB WING SKINS WHERE THEY UNDERLAP THE FUEL TANK BAY COVERS. THE CRACKS ARE LOCATED IN THE RADIUS OF CUTOUT AREAS IN THE SKINS WHERE THE STINGERS JOIN AT WING STATION 150.0. THE AIRCRAFT IS EQUIPPED WITH FLINT WING TIP FUEL TANKS THAT WERE INSTALLED APPROXIMATELY 800 HOURS AGO. IT IS NOT KNOWN IF THIS IS A CONTRIBUTING FACTOR. 36 1982-07-26 GL10198281597 AIRFRAME 5426S G DOUBLER REAR WING SPAR CRACKER 5,342 5,342 INSP/MAINT COMMON CESSNA 337B 3370526 NONE OTHER REAR WING SPAR DOUBLER FOUND CRACKED DURING INSPECTION. 19 1979-08-07 Z197921900078 AIRFRAME 1347L ANGLE REAR SPAR CRACKED 137 137 INSP/MAINT COMMON CESSNA T337H 33701839 NONE OTHER THE ANGLE THAT ATTACHES ROOT RIB TO REAR SPAR OF RT WING CRACKED. 10 1979-07-23 Z197920400044 AIRFRAME 475DF SPAR CAP LT WING CRACKED 3,579 3,579 INSP/MAINT COMMON CESSNA M337B 3370343 NONE OTHER CW AD 78-09-05 FOUND LT WING FRONT LOWER SPAR CAP CRACKED FWD & AFT FASTENERS 14 1976-05-05 Z197612600042 AIRFRAME 2FOR SPAR ATTACHMENT RT REAR WING FAILED 570 570 CRUISE OVER 24 MO CESSNA 337G 33701633 OTHER OTHER STRUCTURE FAILURE IN FLIGHT.RT REAR WING SPAR ATTACHMENT TO FUSELAGE IN WING.FAI LURE PARTIALLY HIDDEN BY INBD RIB 47 1975-11-24 Z197532800037 AIRFRAME 2FOR SKIN SREWS AT TANK CRACKED-DEFORM 1,319 1,319 INSP/MAINT OVER 24 MO CESSNA STC337 3370502 NONE OTHER ROBERTSON STOL CONVERSION PER STC NO SA 1627 WE, WING SURFACE PAINT PEELED, CRA CKED AND DEFORMED AT WING STRUT. 46 1975-11-24 Z197532800036 AIRFRAME 2FOR SKIN SCREWS AT TANK CRACKED-DEFORM 1,481 1,481 INSP/MAINT OVER 24 MO CESSNA STC337 3370683 NONE OTHER ROBERTSON STOL CONVERSION PER STC NO SA 1627 WE, WING SURFACE PAINT PEELED,CRACK ED AND DEFORMED AT WING STRUT 31 1975-06-23 Z197517400035 AIRFRAME 86530 SPAR REAR CARRY TDRU CRACK&KINK 820 820 INSP/MAINT OVER 24 MO CESSNA 337E 33701224 OTDER OTDER DURING AUTOPILOT INSTL AT REPAIR STA FOUND CRACK & KINK IN CARRY TDROUGH WING CE NTER SECTION REAR SPAR (Less significant items below) 19 2001-08-08 AUS20010414 AIRFRAME 2001-05-04 G RIVET WING LOOSE INSP/MAINT CESSNA 337 NONE OTHER (AUS) LT WING STRUT ATTACHMENT RIB TO OUTBOARD TIP RIVETS LOOSE AND MISSING. LEADING EDGE HAD BEEN REPLACED IN 1972. 43 2001-03-05 CA001228030 AIRFRAME 2000-11-15 A FUEL TANK RT WING CRACKED 2,900 INSP/MAINT CESSNA 337H NONE FLUID LOSS (CAN) WHILE BEING STORED IN A HANGAR RIGHT WING WAS DISCOVERED TO BE LEAKING FUEL. UPON FURTHER INSPECTION NR3 FUEL TANKP/N 1516132-16 HAD A CRACK ON TOP NEAR THE TRAILING EDGE. FUEL TANK WAS THEN REMOVED, REPAIRED AND REINSTALLED. 28 1994-07-19 94ZZZX4022 AIRFRAME 1994-07-05 92GD G RIVET LT WS 66 SHEARED 5,096 0 INSP/MAINT COMMON CESSNA P337H P3370343 NONE UNKNOWN TWO RIVETS FAILED AT LT WS 66, ON UPPER FORWARD SPAR CAP. THIS A/C HAS HAD THE ROBERTON STOL CONVERSION AND THE OUTBOARD RIVET FOUND UPSET BETWEEN THE RIB AND SPAR CAP. FAILURE ATTRIBUTED TO IMPROPER INSTALLATION. 26 1994-07-11 94ZZZX3806 AIRFRAME 1994-05-20 285 G FUEL TANK RT INBD CRACKED 2,219 0 INSP/MAINT FREQUENT CESSNA T337G P3370228 NONE FLUID LOSS FUEL STAIN ON RT FUSELAGE AND ON GROUND AFTER TOPPING OFF FUEL TANKS THE NIGHT BEFORE. REMOVED INBOARD TANK COVER, FOUND .75 INCH LONG CRACK ACROSS A PREVIOUS WELD REPAIR. THIS IS SECOND CRACK IN TOP OF SKYMASTER TANK FOUND IN 6 MONTHS. IN THIS CASE, CRACK WAS AT AREA WHERE FORMED STIFFENING AREAS TRANSITIONED INTO FLAT SURFACE. SUBMITTER SUGGESTED POSSIBLE CAUSE WAS VIBRATION. WELDED REPAIRS ARE NOT SPECIFIED IN SERVICE MANUAL. 25 1981-03-13 NM66198175760 AIRFRAME 2QV G TANK R/H INBD LEAKING 650 650 INSP/MAINT FREQUENT CESSNA P337H P3370294 NONE FLUID LOSS TANK CORRODED + LEAKING R/H INBD 13 1981-02-24 NM41198173839 AIRFRAME 42WA G CELL LEAKING 0 0 INSP/MAINT FREQUENT CESSNA T337G P3370205 NONE FLUID LOSS FOUND FUEL STAINS ON BOTTOM OF RT WING NEAR QUICK DRAIN.FOUND FUEL CELL LEAKING ON BOTTOM ALONG WELDED BAFFLE. 44 1978-08-22 Z197823400060 AIRFRAME 2488S BOOM SUMP TANK TOWER WELD CRACKED 1,450 1,450 INSP/MAINT OVER 24 MO CESSNA 337 0788 NONE OTHER DURING INSP FOUND WELD AREA AROUND TOWERS CRACKED 12 1977-08-17 Z197722900072 AIRFRAME 72241 FUEL TNK LFT INB CRACKED 0 0 UNKNOWN OVER 24 MO CESSNA 337G 33701545 OTHER OTHER LFT INB FUEL TNK HAD FATIGUE CRK. CRK OCCURED AT STIFFENER. 11 1977-04-04 Z197709400044 AIRFRAME 53511 TOP OF TANK CRACKED 780 780 151613317 INSP/MAINT OVER 24 MO CESSNA 337 33701671 NONE OTHER FOUND 1.5 INCH LONG CRACK ON TOP OF TANK. LEFT INBOARD. 14 1976-07-21 Z197620300056 AIRFRAME 326 BOTTOM REAR CRACKED 85 85 151613326 CRUISE OVER 24 MO CESSNA T337G P3370238 NONE OTHER FUEL LEAKING FROM RT TANK TRACED TO THREE INCH CRACK IN BOTTOM OF TANK AT REAR BULKHEAD. 33 1976-06-08 Z197616000081 AIRFRAME 111LK FAIRING LEFT STRUT CRACKED 570 570 INSP/MAINT OVER 24 MO CESSNA 337G 1503 NONE OTHER LEFT STRUT FAIRING FOUND CRACKED THRU ALL MOUNTING HOLES TOP AND BOTTOM. 21 1975-10-02 Z197527500046 AIRFRAME 8CF RT WING CRACKED 497 497 151612016 INSP/MAINT OVER 24 MO CESSNA T337G P3370043 NONE OTHER DURING INSP FOUND 1.50 IN CRACK IN TOP OF RT WING CENTER TANK 15 1975-09-24 Z197526700052 AIRFRAME 10MM LT WG INBD TK LEAKING 1,668 1,668 142600337 INSP/MAINT OVER 24 MO CESSNA 337D 0986 NONE OTHER TANK LEAKING AT WELDS. TANK HAD OTHER WELDS TO POROUS TO REPAIR. 29 1975-04-09 Z197509900083 AIRFRAME 79N RT WING INBD CRACKED 1,388 1,388 142600516 INSP/MAINT OVER 24 MO CESSNA 337 3370726 NONE OTHER RT AUX FUEL TANK DEVELOPED CRACKED ON TOP SIDE INBOARD AFT CORNER AREA. CRACK CA USED BY FLEXING OF TANK. 28 1974-07-22 Z197420300037 AIRFRAME 1872M LT BOTTOM CRACKED 484 484 15160571 INSP/MAINT OVER 24 MO CESSNA 337G 33701472 NONE FLUID LOSS FUEL UNDER SIDE LT WING.LT INBD TANK CRACKED AT INNER TANK BAFFLE WELD LOWER SID E 16 1974-06-21 Z197417200066 AIRFRAME 83C FAIRING ASSY RT WING-STRUT CRACKED 95 95 INSP/MAINT OVER 24 MO CESSNA 337 0241 OTHER OTHER UPPER RT WING STRUT FAIRING CRACKED AT ATTACHING SCREW
RELATES TO AILERON Row Date Of Report Operator Control Number Segment Date Of Occurrence Aircraft Registration Operation Type Descriptive Name Of Part Defective Location On Aircraft Failed Part Condition Part Total Time Part Total Time Since Overhaul Component Manufacturer Component Manufacturer Model Component Manufacturer Number Stage Of Operation Severity Factor Aircraft Manufacturer Aircraft Manufacturer Model Aircraft Manufacturer Number Precautionary Procedures Nature Of Condition zxcvbRemarkszxcvb 42 1980-06-19 CE64198072856 AIRFRAME 53475 G CONTROL ROD END TO RIVET CRACKED 490 490 INSP/MAINT OCCASIONAL CESSNA 337 33701649 NONE OTHER LT AIL PUSH-PULL TUBE CRACKED FROM END OF TUBE TO LAST RIVET HOLE THAT ATTACHES ROD END BEARING. 21 1987-08-04 SO638783469 AIRFRAME 1987-06-29 2111X G PUSH PULL ROD R/H AIL SEVERE RUST 0 0 INSP/MAINT OCCASIONAL CESSNA 337 3370011 NONE OTHER LAST FOUR INCHES OF LT AND RT AILERON PUSH RODS SEVERELY RUSTED PROBABLE CAUSE WAS EXPOSURE TO OUTSIDE ELEMENTS. PUSHRODS WERE REPLACED. SUBMITTER RECOMMENDS EXTRA ATTENTION DURING SCHEDULED INSPECTIONS. 20 1987-08-04 SO638783468 AIRFRAME 1987-06-29 2111X G PUSH PULL ROD L/H AIL SEVERE RUST 0 0 INSP/MAINT OCCASIONAL CESSNA 337 3370011 NONE OTHER LAST FOUR INCHES OF LT AND RT AILERON PUSH RODS SEVERELY RUSTED PROBABLE CAUSE WAS EXPOSURE TO OUTSIDE ELEMENTS. PUSHRODS WERE REPLACED. SUBMITTER RECOMMENDS EXTRA ATTENTION DURING SCHEDULED INSPECTIONS. (Less significant items below) 39 1986-02-24 SW998672908 AIRFRAME 1986-02-03 465DF G AILERON CABLE BELLY PULLEY FRAYED 5,642 5,642 INSP/MAINT OCCASIONAL CESSNA M337B 337M0266 NONE OTHER ALL CABLES WERE REMOVED DUE TO HIGH AIRFRAME TIME. ALL CABLES HAD A MINIMUM OF ONE STRAND BROKEN. NONE OF THE DAMAGE COULD BE FOUND WITHOUT REMOVING CABLE ASSY. 8 1977-03-22 Z197708100027 AIRFRAME 72036 BRACKET INBD CORNER FAILED 730 730 INSP/MAINT OVER 24 MO CESSNA 337G 33701510 OTHER OTHER WHILE TENSIONING CABLES AFTER A-P INST,LT AILERON PULLEY BKT FAILED AT INBD ATCH HOLE,APPEARS BKT OUT OF LINE 23 1976-12-14 Z197634900053 AIRFRAME 86513 SCREWS RT AIL BAL WT LOOSE 1,439 1,439 UNKNOWN OVER 24 MO CESSNA 337E 33701216 OTHER OTHER 3 SCREWS LOOSE ON RT AILERON BALANCE WT
RELATES TO HORIZONTAL STABILIZER (excluding elevator) Row Date Of Report Operator Control Number Segment Date Of Occurrence Aircraft Registration Operation Type Descriptive Name Of Part Defective Location On Aircraft Failed Part Condition Part Total Time Part Total Time Since Overhaul Component Manufacturer Component Manufacturer Model Component Manufacturer Number Stage Of Operation Severity Factor Aircraft Manufacturer Aircraft Manufacturer Model Aircraft Manufacturer Number Precautionary Procedures Nature Of Condition zxcvbRemarkszxcvb 31 1994-08-15 94ZZZX4488 AIRFRAME 1994-07-01 7CP G RIB HORIZ STAB LE CRACKED 2,655 0 INSP/MAINT UNCOMMON CESSNA T337G P3370016 NONE OTHER DURING ANNUAL INSPECTION, A SMALL CRACK WAS FOUND NEAR THE RIVET LINE ON THE UNDERSIDE OF THE LEADING EDGE SKIN JUST AFT OF THE DE-ICE BOOT OR THE HORIZONTAL STABILIZER. UPON FURTHER INSPECTION AND REMOVAL OF THE DE-ICER BOOT, NUMEROUS HOLES AND CRACKS WERE FOUND ALONG THE LEADING EDGE SKIN DUE TO RIVETS WHICH HAD PULLED THROUGH THE SKIN. REMOVAL OF THE HORIZONTAL LEADING EDGE SKIN REVEALED SIX LEADING EDGE RIBS AND THREE CENTER SECTION RIBS WHICH WERE CRACKED. 30 1994-08-15 94ZZZX4487 AIRFRAME 1994-07-01 7CP G SKIN HORIZONTAL STAB CORRODED 2,655 0 INSP/MAINT UNCOMMON CESSNA T337G P3370016 NONE OTHER DURING ANNUAL INSPECTION, A SMALL CRACK WAS FOUND NEAR THE RIVET LINE ON THE UNDERSIDE OF THE LEADING EDGE SKIN JUST AFT OF THE DE-ICE BOOT OR THE HORIZONTAL STABILIZER. UPON FURTHER INSPECTION AND REMOVAL OF THE DE-ICER BOOT, NUMEROUS HOLES AND CRACKS WERE FOUND ALONG THE LEADING EDGE SKIN DUE TO RIVETS WHICH HAD PULLED THROUGH THE SKIN. REMOVAL OF THE HORIZONTAL LEADING EDGE SKIN REVEALED SIX LEADING EDGE RIBS AND THREE CENTER SECTION RIBS WHICH WERE CRACKED. 48 1986-06-11 SW688679326 AIRFRAME 1986-04-17 140VE G STAB R/H VERT FIN BOLT SHEARED 3,650 3,650 INSP/MAINT UNCOMMON CESSNA 337H 33701945 NONE UNKNOWN DURING ANNUAL INSP HORIZ STAB FOUND LOOSE AT FWD ATTACH POINT TO R/H VERTICAL FIN. FURTHER INVESTIGATION REVEALED BOTTOMATTACH BOLT MISSING HEAD AND UPPER BOLT LOOSE DUE TO WEAR OF DOUBLER AFT OF SPAR. UPPER HOLE FOUND ELONGATED TO 1/2 INC H. BOTTOM OF SPAR WEB DAMAGED BY CHAFING ON NON-STRUCTURAL SKIN OF VERTICAL FIN. DAMAGE TO VERTICAL FIN SPAR WEB ON LEFTAND RIGHT SIDE WAS NOTED IN THE FORM OF SLIGHT ELONGATION OF 1/4 INCH BOLT HOLES. PROBABLE CAUSE NOT READILY APPARENT, ALTHOUGH REAR ENGINE VIBRATION MAY HAVE AGRAVATED SOME DAMAGE NOT NOTICED AFTER GEAR-UP LANDING IN 1984. ANNUAL INSPECTION OF PREVIOUS YEAR SHOWED NO APPARENT PROBLEM IN THIS AREA. RECOMMEND MORE STRINGENT ANNUAL INSP REQUIRED. 17 1976-01-13 Z197601300034 AIRFRAME 2107X SPAR FRONT STAB CHAFED 2,186 2,186 INSP/MAINT OVER 24 MO CESSNA 337 3370007 NONE OTHER DURING INSP,HORIZ STAB WAS FOUND TO HAVE DAMAGE ON BOTH ENDS.FUSELAGE SKIN HAD C HAFED THE SPAR WEB & RADIUS-SPAR CP
RELATES TO ELEVATOR Row Date Of Report Operator Control Number Segment Date Of Occurrence Aircraft Registration Operation Type Descriptive Name Of Part Defective Location On Aircraft Failed Part Condition Part Total Time Part Total Time Since Overhaul Component Manufacturer Component Manufacturer Model Component Manufacturer Number Stage Of Operation Severity Factor Aircraft Manufacturer Aircraft Manufacturer Model Aircraft Manufacturer Number Precautionary Procedures Nature Of Condition zxcvbRemarkszxcvb 38 1995-04-21 95ZZZX1909 AIRFRAME 1995-03-16 2284X G RIB ELEV END RIB LT CRACKED 1,060 INSP/MAINT CESSNA 337 3370184 NONE OTHER END RIB WHERE PN 1532009-203 (part 36 in fig. below) ATTACHES, BADLY CORRODED AND CRACKED. ELEVATOR ACTUATING ARM HAS STEEL BRACKET, WAS BADLY RUSTED AND RIVETS SHEARED. 42 1990-05-23 WP119085510 AIRFRAME 1990-03-15 86488 G BALANCE ARM ELEV TORQUE TUBE HOLES ELONGATED 2,050 2,050 INSP/MAINT UNCOMMON CESSNA T337 T33701208 NONE FLT CONT AFFECTED OWNER COMPLAINED ABOUT BOOM BOUNCE IN CRUISE. FOUND HOLES ELONGATED IN ELEVATOR BALANCE WEIGHT ARM TORQUE TUBE ASSEMBLY ALLOWING MOVEMENT BETWEEN ARM AND TORQUE TUBE WHICH ALLOWS ELEVATOR TO FLUTTER. 10 1986-11-05 SW618687818 AIRFRAME 1986-09-15 5KR G BELLCRANK ELEV TRIM ELONGATED HOLES 0 0 INSP/MAINT UNCOMMON CESSNA P337H P3370335 NONE OTHER ON 100 HR INSP, SEVERE UP AND DOWN TRAVEL OF ELEVATOR TRIM TAB IN A STATIC CONDITION WAS DISCOVERED. FURTHER INVESTIGAT ION REVEALED ELONGATED HOLES IN BOTH (2 EA) NR 1432023-1 BELLCRANK LINKS (part 21 in fi. below). THESE LINKS ARE APPROX .030 INCH THICKNESS EA CH. NEW LINKS WERE MANUFACTURED IN HOUSE OF .060 INCH THICKNESS ALUMINUM AND INSTALLED. ADDITIONAL EFFECTS OF THIS PAR T FAILURE INCLUDE IMPENDING FAILURE OF THE ELEVATOR TRIM TAB HINGES. PART NR 1432010-30 AND NR 1432010-32. NOTE - NO CONTROL VIBRATIONS WERE NOTED BY OPERATORS. 22 1985-07-03 EU51198580252 AIRFRAME 19MC G LINK BOLT HOLE WORN 0 0 NOT REPORTED UNCOMMON CESSNA 337G P3370015 NONE FLT CONT AFFECTED, VIBRATION/BUFFET BOLT HOLE IN ELEV TAB ACTUATOR LINK WORN CAUSING TAB TO VIBR AND FLUTTER. 1 1985-03-28 EU51198574609 AIRFRAME 2FOR G ELEV ACT ARM PIN BORE CRACKED 890 890 INSP/MAINT UNCOMMON CESSNA T337G P3370288 NONE OTHER DURING 200 HR INSP, FOUND LH + RH ELEV ACT ARMS CRKD AT INNER FACE OF ATTACH.CRKS START AT LARGE SIDE OF PIN BORE. ENTRDAS 2 RPTS. 50 1985-03-28 EU51198574608 AIRFRAME 2FOR G ELEV ACT ARM PIN BORE CRACKED 890 890 INSP/MAINT UNCOMMON CESSNA T337G P3370288 NONE OTHER DURING 200 HR INSP, FOUND LH + RH ELEV ACT ARMS CRKD AT INNER FACE OF ATTACH.CRKS START AT LARGE SIDE OF PIN BORE.ENTRD AS 2 RPTS. 12 1984-05-25 WP08198478208 AIRFRAME 2424S G ARM FWD ATT BOLT BROKE 1,217 1,217 INSP/MAINT UNCOMMON CESSNA 337B 3370724 NONE OTHER ELEV TRIM TAB ARM BROKE AT FWD ATTACH BOLT. 37 1980-12-02 GL03198082475 AIRFRAME 60E G SKIN-RIBS LEADG EDGE CRACKED 0 0 INSP/MAINT UNCOMMON CESSNA P337H P3370124 NONE OTHER RIBS CRACKED AND REPLACED SKIN AND PART NOS. 1432018-51, 1432018-51 AND 1432018-52 (parts 4, 13, 14 in fig. below). 32 1980-10-29 CE64198080898 AIRFRAME 3666X G ROD END BROKE 2,193 2,193 CRUISE UNCOMMON CESSNA 337A 3370496 NONE FLT CONT AFFECTED ELEV LOWER CONTROL ROD END BROKE DURING FLT SEPARATING ELEV FROM ELEV CONTROL SY STEM.BREAK WAS IN THREADED AERA 45 1978-08-22 Z197823400063 AIRFRAME 2488S WEIGHT ARM TAPER PIN HOLE CRACKED 1,450 1,450 INSP/MAINT OVER 24 MO CESSNA 337 0788 NONE OTHER DURING INSP FOUND WEIGHT ARM CRACKED AT POINT WHERE TAPER PINS ATTACH TO TORQUE TUBE 33 1976-09-01 Z197624500108 AIRFRAME 5317S ROD AT THREADS BROKEN 2,300 2,300 CRUISE OVER 24 MO CESSNA 337A 3370147 OTHER, UNSCHED LANDING OTHER ELEV TRIM TAB CONTROL ROD BROKE AT THREADS DURING FLIGHT (Less significant items below) 17 1991-09-05 91ZZZX10161 AIRFRAME 1991-07-18 G CABLE RT TAIL BOOM WRAPPED AROUND 0 226 INSP/MAINT UNCOMMON CESSNA P337H NONE OTHER DURING ANNUAL INSPECTION FOUND ELEVATOR TRIM CABLE WRAPPED AROUND RUBBER CABLE AND THEN WRAPPED AROUND ITSELF INSIDE THE RIGHT TAIL BOOM FRONT SECTION. SUGGEST CLOSE INSPECTION IN THIS AREA WITH A BRIGHT LIGHT AS THIS AREA IS CLOSE AND HARD TO SEE. 9 1988-12-15 NM078898142 AIRFRAME 1988-11-02 3000T G CABLE UP ELEV ABRAIDED 2,091 2,091 INSP/MAINT UNCOMMON CESSNA T337B T3370600 NONE OTHER DURING ANNUAL INSPECTION OF CONTROL CABLES IN LEFT TAIL BOOM FOUND THE UP ELEV CABLE (P/N 1460100-12) BADLY ABRAIDED BY THE LOWER EDGE OF THE PULLEY BRACKET ASSY (P/N 1470066-12) LOCATED IMMEDIATELY AFT OF THE AUTOPILOT PITCH ACTUATOR. IT APPEARS THAT PULLEY BRACKET ASSY WAS MOUNTED TOO LOW IN THE TAIL BOOM THUS CAUSING INTERFERENCE WITH THE CABLE. 47 1986-06-11 EA038679315 AIRFRAME 1986-04-17 4DU G ACTUATING ARM LT ELEV CRACKED 624 624 INSP/MAINT UNCOMMON CESSNA P337H P3370311 NONE OTHER DURING ANNUAL INSPECTION FOUND LEFT ELEVATOR ACTUATING ARM CRACKED. CRACK STARTS AT INBOARD TAPPER PIN HOLE AND RUNS FOR.25 INCH. CAUSE--MAY BE AIRCRAFT BEING IN WIND WITHOUT CONTROL LOCK BEING INSTALLED. BALANCE WEIGHT FOR ELEVATOR IS MOU NTED ON END OF THIS ARM. INSTALLATION OF ELEVATOR CONTROL LOCK AT ALL TIMES AND INSPECTION OF ARM AT TAPPERED PIN HOLES. 40 1984-12-05 GL08198488623 AIRFRAME 4KP G SPROCKET HORIZONTAL STAB LOST PINS 0 0 NOT REPORTED UNCOMMON CESSNA T337G P3370255 OTHER OTHER, WARNING INDICATION BOTH PINS HOLDING ELEVATOR TRIM CHAIN TO SPROCKET FELL OUT. 27 1980-10-17 WP01198080312 AIRFRAME 2144X G BUMPER BLOCK RT FIN FOR ELEV BROKEN 3,350 3,350 INSP/MAINT UNCOMMON CESSNA 337 3370044 NONE OTHER VERTICAL FIN INSTALLATION-ELEVATOR DOWN BUMPER BLOCK BRACKET BROKEN 40 1975-05-02 Z197512200031 AIRFRAME 5325S STOPS VERT FIN AREA SEPARTED 0 0 CRUISE OVER 24 MO CESSNA 337A 3370425 UNSCHED LANDING FLT CONT AFFECTED ELEV CONTROLS JAMMED IN NEUTRAL POS.FOUND STOP BOLT & NUT IN VERT FIN SEPARATED FROM STRUCTURE,OVERTRVL BENT CTL RD 
RELATES TO VERTICAL STABILIZER (excluding rudder) Row Date Of Report Operator Control Number Segment Date Of Occurrence Aircraft Registration Operation Type Descriptive Name Of Part Defective Location On Aircraft Failed Part Condition Part Total Time Part Total Time Since Overhaul Component Manufacturer Component Manufacturer Model Component Manufacturer Number Stage Of Operation Severity Factor Aircraft Manufacturer Aircraft Manufacturer Model Aircraft Manufacturer Number Precautionary Procedures Nature Of Condition zxcvbRemarkszxcvb 29 1994-08-01 94ZZZX4286 AIRFRAME 1994-07-21 92GD G RIB VERTICAL FIN CRACKED 5,096 0 INSP/MAINT UNCOMMON CESSNA P337H P3370343 NONE OTHER DURING AN ANNUAL INSPECTION, A RIB IN THE VERTICAL FIN WAS FOUND CRACKED APPROXIMATELY .3750 INCH LONG INITIATING AT THE AFT INBOARD BEND RADIUS. THE SAME CONDITION WAS FOUND IN BOTH THE LT AND RT VERTICAL FINS. CESSNA WAS CONTACTED TO DETERMINE THE PART NUMBER SINCE IT IS NOT SHOWN IN THE I.P.C. NO DIRECT CAUSE FOR THE CRACK COULD BE DETERMINED. 22 1991-10-30 91ZZZX1705 AIRFRAME 1991-08-19 2181X G FITTING FIN ATTACHMENT CORRODED 0 0 INSP/MAINT UNCOMMON CESSNA 337 3370081 NONE OTHER CORROSION. DURING ANNUAL INSPECTION RIGHT VERTICAL TAIL FIN ATTACHMENT TO RIGHT REAR HORIZONTAL STABILIZER ATTACH FITTING, P/N 1431003-36 (part 35 in fig. below). CORRODED TO CONDITION OF EXFOLIATION. TOTAL TIME AIRCRAFT 3450.0 HOURS. 39 1988-03-23 CE658876348 AIRFRAME 88N G RIB R/H VERT STAB CRACKED 4,677 4,677 INSP/MAINT UNCOMMON CESSNA T337H 1947 NONE OTHER ON ANNUAL INSPECTION, FOUND RIB CRACKED IN AFT INBOARD CORNER NEAR ELEVATOR STOP BOLT BRACKET IN BOTH VERTICAL STAB ASSEMBLIES. 38 1988-03-23 CE658876347 AIRFRAME 88N G RIB L/H VERT STAB CRACKED 4,677 4,677 INSP/MAINT UNCOMMON CESSNA T337H 1947 NONE OTHER ON ANNUAL INSPECTION, FOUND RIB CRACKED IN AFT INBOARD CORNER NEAR ELEVATOR STOP BOLT BRACKET IN BOTH VERTICAL STAB ASSEMBLIES. 48 1986-06-11 SW688679326 AIRFRAME 1986-04-17 140VE G STAB R/H VERT FIN BOLT SHEARED 3,650 3,650 INSP/MAINT UNCOMMON CESSNA 337H 33701945 NONE UNKNOWN DURING ANNUAL INSP HORIZ STAB FOUND LOOSE AT FWD ATTACH POINT TO R/H VERTICAL FIN. FURTHER INVESTIGATION REVEALED BOTTOMATTACH BOLT MISSING HEAD AND UPPER BOLT LOOSE DUE TO WEAR OF DOUBLER AFT OF SPAR. UPPER HOLE FOUND ELONGATED TO 1/2 INC H. BOTTOM OF SPAR WEB DAMAGED BY CHAFING ON NON-STRUCTURAL SKIN OF VERTICAL FIN. DAMAGE TO VERTICAL FIN SPAR WEB ON LEFTAND RIGHT SIDE WAS NOTED IN THE FORM OF SLIGHT ELONGATION OF 1/4 INCH BOLT HOLES. PROBABLE CAUSE NOT READILY APPARENT, ALTHOUGH REAR ENGINE VIBRATION MAY HAVE AGRAVATED SOME DAMAGE NOT NOTICED AFTER GEAR-UP LANDING IN 1984. ANNUAL INSPECTION OF PREVIOUS YEAR SHOWED NO APPARENT PROBLEM IN THIS AREA. RECOMMEND MORE STRINGENT ANNUAL INSP REQUIRED. 27 1980-10-17 WP01198080312 AIRFRAME 2144X G BUMPER BLOCK RT FIN FOR ELEV BROKEN 3,350 3,350 INSP/MAINT UNCOMMON CESSNA 337 3370044 NONE OTHER VERTICAL FIN INSTALLATION-ELEVATOR DOWN BUMPER BLOCK BRACKET BROKEN 40 1975-05-02 Z197512200031 AIRFRAME 5325S STOPS VERT FIN AREA SEPARTED 0 0 CRUISE OVER 24 MO CESSNA 337A 3370425 UNSCHED LANDING FLT CONT AFFECTED ELEV CONTROLS JAMMED IN NEUTRAL POS.FOUND STOP BOLT & NUT IN VERT FIN SEPARATED FROM STRUCTURE,OVERTRVL BENT CTL RD 23 1974-07-09 Z197419000088 AIRFRAME 75BB RIB VERT STABL CRACKED 4,786 4,786 INSP/MAINT OVER 24 MO CESSNA 337 3370834 NONE OTHER SEVERELY CRACKED RIB IN VERTICAL STABILIZER.
RELATES TO RUDDER Row Date Of Report Operator Control Number Segment Date Of Occurrence Aircraft Registration Operation Type Descriptive Name Of Part Defective Location On Aircraft Failed Part Condition Part Total Time Part Total Time Since Overhaul Component Manufacturer Component Manufacturer Model Component Manufacturer Number Stage Of Operation Severity Factor Aircraft Manufacturer Aircraft Manufacturer Model Aircraft Manufacturer Number Precautionary Procedures Nature Of Condition zxcvbRemarkszxcvb 23 1999-02-12 CA981230030 AIRFRAME 1998-12-30 G RIB RUDDER CRACKED 6,447 143100088 INSP/MAINT CESSNA 337G NONE OTHER (CAN) .75 INCH CRACK FOUND ON RIGHT RUDDER UPPER RIB WHERE THE MASS BALANCE WEIGHT ATTACHES. REPLACEMENT RIB FABRICATEDPER SRM AND AC43.13 GUIDELINES. 41 1995-09-08 95ZZZX4474 AIRFRAME 1995-08-09 72086 G SPAR RUDDER BROKEN 2,875 143100058 INSP/MAINT CESSNA 337G 33701518 NONE OTHER AT ANNUAL, FOUND RIGHT RUDDER SPAR BROKEN AT BALANCE WEIGHT RIB ATTACH. 14 1991-04-24 GL199184063 AIRFRAME 1990-10-01 40Z G RIB LEFT RUDDER TIP CRACKED 1,128 1,128 INSP/MAINT UNCOMMON CESSNA P337H P3370313 NONE OTHER WHILE REPLACING THE LEFT RUDDER TIP FOR CRACKS THE BALANCE WEIGHT SUPPORT RIB WAS FOUND CRACKED ON BOTH SIDES BETWEEN THE 2 CENTER NUTPLATES. THIS RIB IS SECURED BY 4 SCREWS ON EACH SIDE, 2 GO TO THE LAST RIB IN THE RUDDER AND 2 ARE SECURED ONLY TO THE PLASTIC RUDDER TIP. THE RUDDER TIP WAS CRACKED AT THE SCREW HOLES ON BOTH SIDES ALLOWING THE RIB TO TAKE ALL THE LOAD FROM THE BALANCE WEIGHT. 25 1985-07-29 WP02198581713 AIRFRAME 1385L G RIB ASSY RH RUDDER TIP CRACKED 1,398 1,398 INSP/MAINT UNCOMMON CESSNA T337H 33701877 NONE OTHER RUDDER TIP RIB CRACKED AND ALLOWED WEIGHT TO DROOP AND SCRAPE TOP OF STABILIZER. 44 1984-12-26 WP07198489653 AIRFRAME 86230 G CHANNEL CENTER SUPT BROKEN 1,946 1,946 INSP/MAINT UNCOMMON CESSNA 337D 3371119 NONE OTHER RUDDER BALANCE BAR ATTACH CHANNEL BROKEN. 23 1982-03-29 WP12198275178 AIRFRAME 1326S G RIB RUDDER CRACKED 345 345 INSP/MAINT UNCOMMON CESSNA T337H 33701904 NONE OTHER ON REMOVAL OF RUDDER TIP CAP TOP RIB ASSY PART 143100215 (part 6 in fig. below) CRACKED BETWEEN SECOND AND THIRD SCREW HOLES FOR CAP. 25 1977-01-05 Z197700500030 AIRFRAME 1VF FAIRING TOP RT RUDDER BROKEN 796 796 INSP/MAINT OVER 24 MO CESSNA T337G 330098 OTHER OTHER ROYALITE FAIRING AT TOP OF RT RUDDER TIP SUPPORTS FWD 7 IN OF RIB WHICH CONTAINS 3LB LEAD WT.4 SCREW HOLES CR OUT (Less significant items below) 11 1988-12-15 NM078898190 AIRFRAME 1988-08-26 3000T G CABLE RUDDER AT BOOM WORN 2,091 2,091 INSP/MAINT UNCOMMON CESSNA T337B 3370600 NONE OTHER ROUTINE ANNUAL INSPECTION OF CABLES IN RIGHT TAIL BOOM REVEALED THAT THE RIGHT RUDDER CABLE WAS BADLY WORN AT THE GUIDE ASSEMBLY (P/N 1560100-22) ON THE ELECTRIC PITCH TRIM SERVO AT APPROX STA 110. THE CABLE GUIDE GROMMET (P/N S-1291-6) WAS MISSING FROM THE GUIDE ASSEMBLY ALLOWING THE CABLE TO WEAR DIRECTLY ON THE METAL GUIDE. 38 1986-02-24 SW998672907 AIRFRAME 1986-02-03 470DF G RUDDER CABLE THRU BOOM GUIDE FRAYED 4,688 4,688 INSP/MAINT UNCOMMON CESSNA M337B 337M0254 NONE OTHER ALL CABLES WERE REMOVED DUE TO HIGH AIRFRAME TIME. ALL CABLES HAD A MINIMUM OF ONE STRAND BROKEN. NONE OF THE DAMAGE COULD BE FOUND WITHOUT REMOVING CABLE ASSY.
RELATES TO TAIL BOOM Row Date Of Report Operator Control Number Segment Date Of Occurrence Aircraft Registration Operation Type Descriptive Name Of Part Defective Location On Aircraft Failed Part Condition Part Total Time Part Total Time Since Overhaul Component Manufacturer Component Manufacturer Model Component Manufacturer Number Stage Of Operation Severity Factor Aircraft Manufacturer Aircraft Manufacturer Model Aircraft Manufacturer Number Precautionary Procedures Nature Of Condition zxcvbRemarkszxcvb 50 2003-10-20 AUS20030912 AIRFRAME 2003-09-08 G STRUCTURE TAILBOOM CORRODED INSP/MAINT CESSNA 337G NONE OTHER (AUS) LT TAILBOOM LOWER STRUCTURE CORRODED IN AREA OF ATTACHMENT TO WING STRUCTURE. CORROSION IS BOTH INTERNAL AND EXTERNAL. RT TAILBOOM CONTAINED INTERNAL CORROSION ONLY. 41 1988-03-23 EA218876366 AIRFRAME 1988-02-06 74L G SCREWS TAIL BOOM LOOSE 3,524 3,524 INSP/MAINT UNCOMMON CESSNA 337G 33701814 NONE OTHER DURING ANNUAL, CHECKED TAIL BOOM ATTACHING SCREWS AND FOUND ABOUT 40 PERCENT OF THE SCREWS LOOSE. THIS IS THE SECOND OCCURENCE OF THIS CONDITION FOUND ON THIS AIRCRAFT. THE FIRST OCCURRENCE WAS AT 2186 HOURS. SUBMITTER RECOMMENDS THAT THESE SCREWS BE RETORQUED AT THE ANNUAL INSPECTION. SUBMITTER RECOMMENDS TORQUE IS 90-95 INCH POUNDS. FOUND SOME SCREWS AS LOW AS 35 INCH POUNDS. 40 1988-03-23 EA218876365 AIRFRAME 1988-02-16 74L G SCREWS TAIL BOOM LOOSE 3,524 3,524 INSP/MAINT UNCOMMON CESSNA 337G 33701814 NONE OTHER DURING ANNUAL, CHECKED TAIL BOOM ATTACHING SCREW AND FOUND ABOUT 40 PERCENT OF THE SCREWS LOOSE. THIS IS THE SECOND OCCURRENCE OF THIS CONDITION FOUND ON THIS AIRCRAFT. THE FIRST OCCURRENCE WAS AT 2186 HOURS. SUBMITTER RECOMMENDS THAT THESE SCREWS BE RETORQUED AT THE ANNUAL INSPECTION. SUBMITTER RECOMMENDS TORQUE IS 90-95 INCH POUNDS. FOUND SOME SCREWS AS LOW AS 35 INCH POUNDS. 44 1978-08-22 Z197823400060 AIRFRAME 2488S BOOM SUMP TANK TOWER WELD CRACKED 1,450 1,450 INSP/MAINT OVER 24 MO CESSNA 337 0788 NONE OTHER DURING INSP FOUND WELD AREA AROUND TOWERS CRACKED
RELATES TO FLAP CABLES Row Date Of Report Operator Control Number Segment Date Of Occurrence Aircraft Registration Operation Type Descriptive Name Of Part Defective Location On Aircraft Failed Part Condition Part Total Time Part Total Time Since Overhaul Component Manufacturer Component Manufacturer Model Component Manufacturer Number Stage Of Operation Severity Factor Aircraft Manufacturer Aircraft Manufacturer Model Aircraft Manufacturer Number Precautionary Procedures Nature Of Condition zxcvbRemarkszxcvb 14 2004-03-30 CA040122003 AIRFRAME 2004-01-21 G CONTROL CABLE TE FLAPS FRAYED INSP/MAINT CESSNA T337G NONE OTHER (CAN) DURING INSPECTION IT WAS DISCOVERED THAT THESE CABLES (2EA. 1 LEFT AND 1 RIGHT) WERE FRAYED WHERE THE CABLE BENDSAROUND THE FLAP CABLE QUADRANT LOCATED IN THE WING TRAILING EDGE. 13 2004-03-30 CA040122002 AIRFRAME 2004-01-21 G CONTROL CABLE TE FLAPS FRAYED INSP/MAINT CESSNA T337G NONE OTHER (CAN) DURING INSPECTION IT WAS DICOVERED THAT THESE CABLES (2EA. 1 LT AND 1 RT) WERE FRAYED WHERE THE CABLE BENDS AROUNDTHE FLAP CABLE QUADRANT LOCATED IN THE WING TRAILING EDGE. 12 2004-03-29 AUS20031318 AIRFRAME 2003-11-28 G CONTROL CABLE TE FLAPS FRAYED INSP/MAINT CESSNA 337H NONE OTHER (AUS) IB FLAP CABLE CONTAINED BROKEN WIRES LOCATED AT TIGHT BEND AROUND THE BELLCRANK. APPROXIMATELY 50 PERCENT OF THEWIRES WERE BROKEN. INSPECTION CARRIED OUT IN RESPONSE TO MFG ALERT. 9 2004-03-25 CA040225011 AIRFRAME 2004-02-24 G CONTROL CABLE TE FLAPS FRAYED INSP/MAINT CESSNA 337A NONE OTHER (CAN) FLAP CABLES REMOVED FOR INSPECTION DUE TO SERVICE DIFFICULTY ALERT AL-2003-05. LT AND RT OUTBOARD FLAP CABLES FOUND TO BE FREYED AT THE INBOARD BELLCRANK, APPROXIMATELY 1 INCH FROM THE SWAGGED TERMINAL. BOTH CABLES ARE ORIGINAL CESSNAFLAP CABLES AND WERE REPLACED WITH NEW CESSNA FLAP CABLES. ALSO, THE RT, INBOARD FLAP CABLE WAS FREYED AT THE INBOARD BELLCRANK, APPROXIMATELY 1 INCH FROM THE SWAGGED TERMINAL. 5 2004-01-08 AUS20031143 AIRFRAME 2003-10-16 G CONTROL CABLE TE FLAP FRAYED INSP/MAINT CESSNA T337G NONE OTHER (AUS) LT AND RT FLAP DOWN CABLES PN 1460100-7 AND PN 1460100-8 FRAYED WITH BROKEN STRANDS AROUND BELLCRANK ACTUATOR. 2 2003-10-21 CA031001010 AIRFRAME 2003-09-23 G CONTROL CABLE TE FLAPS DAMAGED INSP/MAINT CESSNA 337G NONE OTHER (CAN) A SPECIAL INSPECTION WAS INITIATED TO COMPLY WITH REMOVAL AND INSPECTION OF FLAP CONTROL CABLES THAT ARE CONNECTEDTO THE INBOARD FLAP BELLCRANK. CABLE PN 14601007 AND 14601008 WERE BOTH FOUND TO HAVE SEVERAL BROKEN STRANDS AND REQUIRED REPLACEMENT SERVICE DIFFICULTY ALERT AL 2003-05 REFERS TO THIS PROBLEM. 1 2003-10-21 CA031001009 AIRFRAME 2003-09-23 G CONTROL CABLE TE FLAPS DAMAGED INSP/MAINT CESSNA 337G NONE OTHER (CAN) A SPECIAL INSPECTION WAS INITIATED TO COMPLY WITH REMOVAL AND INSPECTION OF FLAP CONTROL CABLES THAT ARE CONNECTEDTO THE INBOARD FLAP BELLCRANK. CABLE P/N 1460 100-7 AND 1460100-8 WERE BOTH FOUND TO HAVE SEVERAL BROKEN STRANDS AND REQUIRED REPLACEMENT. SERVICE DIFFICULTY ALERT AL2003-05 REFERS TO THIS PROBLEM. 49 2003-07-03 CA030602001 AIRFRAME 2003-05-30 G CONTROL CABLE FLAP ACTUATOR DAMAGED INSP/MAINT CESSNA 337G NONE OTHER (CAN) AFTER RECEIVING SDR ALERT AL-2003-05 AN INSPECTION WAS CARRIED OUT ON OUR 337G. TWO CABLES ON BOTH SIDES WERE FOUND DAMAGED. THE DAMAGE WAS LOCATED EXACTLY IN THE SAME LOCATION AS MENTION IN THE ALERT IE AROUND THE SHARP BEND OF THE BELLCRANK. ALL CABLES HAD TO BE REMOVED TO SEE THE DAMAGE.HAD THEY NOT THE DAMAGE WOULD OF WENT UNNOTICED. BOTH SETS OF CABLES WERE REPLACED WITH SERVICEABLE UNITS. 48 2003-07-02 CA030606010 AIRFRAME 2003-06-06 G CONTROL CABLE TE FLAP FRAYED NOT REPORTED CESSNA 337A ACTIVATE FIRE EXT. FLT CONT AFFECTED (CAN) INSPECTION OF FLAP CABLES IAW SERVICE DIFFICULTY ALERT NR AL-2003-05, FOUND THREE FRAYED CABLE ENDS, ONE AT OUTBOARD BELLCRANK. 47 2003-06-17 AUS20030479 AIRFRAME 2003-03-09 G CONTROL CABLE TE FLAPS FRAYED INSP/MAINT CESSNA M337B NONE OTHER (AUS) LH TRAILING EDGE FLAP CONTROL CABLE CONTAINED BROKEN STRANDS IN AREA APPROXIMATELY 25.4MM (1IN) FROM SWAGE AT BELLCRANK END. 42 2003-05-07 AUS20030355 AIRFRAME 2003-02-27 A CONTROL CABLE TE FLAPS FRAYED INSP/MAINT CESSNA 337B NONE OTHER (AUS) RT INBOARD FLAP CABLE CONTAINED BROKEN STRANDS LOCATED IN AREA APPROXIMATELY 25.4MM TO 38.1MM (1IN TO 1.5IN) FROMTHE INBOARD BELLCRANK TURNBUCKLE. 41 2003-04-29 AUS20030264 AIRFRAME 2003-03-03 G CONTROL CABLE TE FLAP CORRODED INSP/MAINT CESSNA 337A NONE OTHER (AUS) FLAP CONTROL CABLES PN 14601007 AND PNO 14601008 CORRODED AND FRAYED. 40 2003-04-14 CA030227005 AIRFRAME 2003-02-27 G CONTROL CABLE TE FLAPS FRAYED NOT REPORTED CESSNA 337G OTHER OTHER (CAN) DURING 100 HR INSPECTION THE INBOARD RIGHT HAND FLAP CABLE WAS INSPECTED FOR WEAR IN THE AREA OF THE INBOARD FLAPBELLCRANK. CABLE WAS FOUND FRAYED APPROX. 1 INCH FROM CABLE END ATTACH FITTING.CABLE R EPLACED. 21 1999-01-22 99ZZZX297 AIRFRAME 1998-11-09 2655S G CONTROL CABLE TE FLAP SEVERED APPROACH CESSNA 337C 3370955 ABORTED APPROACH FLT CONT AFFECTED THE LEFT FLAP CONTROL CABLE WAS FOUND BADLY FRAYED AND SEVERED AT THE LEFT INBOARD BELLCRANK. PHOTOS AT THE SCENE SHOWRT FLAPS FULL DOWN AND LOCKED. LT FLAPS ARE NOT EXTENDED. A FULL POWER 'GO AROUND' ATTEMPT RESULTED IN A 'NO CONTROL'SITUATION CAUSED BY A SPLIT FLAT CONDITION KNOWN AS ASYMMETRICAL FLAP HAZARD. SUBMITTER STATED THE ANNUAL INSPECTION HAD BEEN COMPLETED A FEW DAYS PRIOR. AIRCRAFT WAS DESTROYED. 8 1975-09-04 Z197524700054 AIRFRAME 2479S BELLCRANK INBD FLAP-RT BROKEN 621 621 INSP/MAINT OVER 24 MO CESSNA 337C 3370779 NONE OTHER QUANDRANT & BELLCRANK ASSY INBD RIGHT FLAP FAILED,RESULTING IN SPLIT FLAP. CAUGHT BY PILOT ON PREFLT. (Less significant items below) 47 1977-10-21 Z197729400142 AIRFRAME 2321S CABLE RH BELLCRANK FRAYED 855 855 INSP/MAINT OVER 24 MO CESSNA 337B 3370621 NONE OTHER BOTH INNER & OUTER WERE IN SAME GROOVE ON THE RH INNER FLAP BELLCRANK CAUSING FR AYING
RELATES TO ENGINE MOUNT Row Date Of Report Operator Control Number Segment Date Of Occurrence Aircraft Registration Operation Type Descriptive Name Of Part Defective Location On Aircraft Failed Part Condition Part Total Time Part Total Time Since Overhaul Component Manufacturer Component Manufacturer Model Component Manufacturer Number Stage Of Operation Severity Factor Aircraft Manufacturer Aircraft Manufacturer Model Aircraft Manufacturer Number Precautionary Procedures Nature Of Condition zxcvbRemarkszxcvb 46 1998-04-02 CA970812010 AIRFRAME 1997-07-23 G TUBE ENGINE MOUNT BROKEN 4,165 CONT IO360C 60071CR INSP/MAINT CESSNA 337 NONE OTHER (CAN) DURING ANNUAL INSPECTION, IT WAS FOUND THAT A REAR ENGINE MOUNT WAS BROKEN. LOWER RIGHT HAND TUBE 1.5 INCHES BELOW THE WEB. CRACKED THROUGH THE ENTIRE DIAMETER. 32 1994-09-30 94ZZZX5662 AIRFRAME 1994-06-30 83C G CHANNEL FWD ENG MOUNT CRACKED 2,164 0 INSP/MAINT UNCOMMON CESSNA T337G P3370114 NONE OTDER CRACK FOUND IN RADIUS OF BEND IN CHANNEL THAT MAKES UP THE AFT SIDE OF THE AFT RT ENGINE MOUNT BOX STRUCTURE. TWO OTHER AIRCRAFT WITH ABOUT THE SAME TOTAL HOURS HAD CRACKS IN THE SAME AREA. THE CRACK WAS DISCOVERED DURING ENGINE REMOVAL. THE CRACKS COULD HAVE GONE UNNOTICED IN THE OTHER AIRCRAFT. WITH ENGINES INSTALLED, IT IS A DIFFICULT AREA TO SEE. SUBMITTER SUGGESTS POSSIBLE INCREASED STRESS IN THAT AREA CAUSED CRACKS. 45 1990-08-02 NM079091928 AIRFRAME 1990-06-15 37E G MOUNT REAR ENGINE CRACKED 1,701 1,701 INSP/MAINT UNCOMMON CESSNA 337G P3370127 NONE OTHER REMOVED REAR ENGINE TO REPAIR CASE CRACK. CRACK NOT SEEN IN ENGINE MOUNT DURING INITIAL INSPECTION. AFTER STRIPPING MOUNT FOR OTHER REPAIRS AND PAINTING, CRACK BECAME VISIBLE. SUBMITTER RECOMMENDS THAT AT ANY ENGINE REMOVAL, THE ENGINE MOUNT BE CLEANED AND STRIPPED TO INSPECT FOR CRACKS. 25 1983-05-16 SW63198379642 AIRFRAME 86529 G MT BRACKET NO 2 ENG CRACKED 2,335 2,335 INSP/MAINT UNCOMMON CESSNA T337/ T33701223 NONE OTHER PREFLIGHT INSP REVEALED LT REAR ENG MT BRACKET CRACKED APPROX 1.50 INCHES LONG.BRACKET BOLTS TO ENG CASE. 47 1982-10-22 SW63198286179 AIRFRAME 86529 G MOUNT NO 2 ENG LF MT CRACKED 2,257 2,257 INSP/MAINT UNCOMMON CESSNA T337E T33701223 NONE OTHER INSP FOUND NO 2 ENG HAD THE LF ENG MT CRACKED IN CASTING APPEARED TO BE ALMOST TO THE POINT OF COMPLETE SEPARATION. 46 1980-07-14 WP04198074252 AIRFRAME 4CT G BRACKET ENG MOUNT BROKEN 971 971 INSP/MAINT UNCOMMON CESSNA T337G P3370004 NONE VIBRATION/BUFFET FOUND RT REAR ENG MOUNT BRACKET BROKEN 36 1979-10-10 Z197928300046 AIRFRAME 4BU MOUNT LEG AT FIREWALL BROKEN 468 468 INSP/MAINT UNCOMMON CESSNA P337H P33770304 NONE OTHER REAR ENGINE MOUNT LEG BROKEN WHERE IT ATTACHES TO THE FIREWALL. 41 1979-05-11 Z197913100038 AIRFRAME 2FOR V BRACE REAR ENG BROKEN 2,160 2,160 INSP/MAINT UNCOMMON CESSNA 337A 3370258 NONE OTHER RT V BRACE BROKEN BETWEEN ENG MT MEMBERS REAR ENG 40 1979-05-07 Z197912700028 AIRFRAME 1ZG MOUNT CROSS MEMBER BROKEN 504 504 INSP/MAINT UNCOMMON CESSNA T337G P3370265 NONE OTHER ON PREFLIGHT INSP.PILOT FOUND CROSS MEMBER AT REAR OF MOUNT BROKEN LOOSE AT 1 EN D & CRACKED AT OTHER END.REPAIRED 16 1978-04-03 Z197809300048 AIRFRAME 1748M TUBE ADJ CLUSTER WELD CRACKED 2,500 2,500 INSP/MAINT OVER 24 MO CESSNA 337F 33701348 NONE OTHER RT LOWER HORIZONTAL ENGINE MOUNT TUBE CRACKED AND BROKE ONE INCH FROM CLUSTER WE LD. 45 1977-02-07 Z197703800045 AIRFRAME 1293M MOUNT BRACKET REAR ENG CRACKED 22 22 INSP/MAINT OVER 24 MO CESSNA T337/ 01293 NONE OTHER BRACKET FOUND CRACKED DURING 25 HR INSP ON REAR ENG ATTACHING WEB & ENG MOUNT BOLT.RECOMMEND RETORQUE ALL MT TO ENG 5 1976-10-27 Z197630100033 AIRFRAME 2623S MOUNT BRACKET REAR ENGINE CRACKED 1,276 1,276 INSP/MAINT OVER 24 MO CESSNA 337 T3370923 NONE OTHER ENG MOUNT BRACKET ON REAR ENG FOUND CRACKED DURING ANNUAL INSP.REAR ENG MOUNT BRACKET HAD BEEN REPLACED ONCE 42 1976-06-21 Z197617300043 AIRFRAME 2623S MOUNT LEFT REAR CRACKED 1,235 100 INSP/MAINT OVER 24 MO CESSNA 337 3370923 NONE NO WARNING INDICATION, OTHER RT FRONT ENG MOUNT LEG CRACKED TWO THIRDS OF CIRCUMF.THIS MOUNT PUSHER POSN.CRACKED 100 HRS OUT OF OVERHAUL 13 1976-04-30 Z197612100064 AIRFRAME 5311Q BRACKET CRACKED 0 0 UNKNOWN OVER 24 MO CESSNA T337D 1093 OTHER OTHER ENG MOUNT BRACKED CRACKED BTWN ENG MOUNT BOLTS 41 1975-11-13 Z197531700059 AIRFRAME 6269F MOUNT ENG LWR RT CRACKED 0 0 UNKNOWN OVER 24 MO CESSNA 337A 3370269 OTHER OTHER REAR ENG MOUNT CROSS MEMBER CRACKED,LWR RT,RPRD PER AC 43.13.1A 11 1975-09-16 Z197525900038 AIRFRAME 1843M MOUNT LWR LT CLUSTER BROKEN 0 0 INSP/MAINT OVER 24 MO CESSNA 337 33701443 NONE OTHER REAR ENGINE MOUNT BRACE BROKEN AT LOWER LT CLUSTER 14 1975-05-28 Z197514800064 AIRFRAME 6243F MOUNT UPR SUPP TUBE BROKEN 1,125 1,125 INSP/MAINT OVER 24 MO CESSNA 337 3370243 NONE OTHER 40 1975-02-13 Z197504400048 AIRFRAME 11RA BRACKET REAR ENGINE BROKEN 0 107 INSP/MAINT OVER 24 MO CESSNA T337D T3371143 NONE OTHER RT FRNT ENG MOUNT BROKE. 37 1975-02-05 Z197503600049 AIRFRAME 11AR SUPPORT LEG LT SIDE ENG BROKEN 0 0 INSP/MAINT OVER 24 MO CESSNA T337D 3371143 NONE OTHER AFT ENG REAR LT SUPPORT LEG CRANKCASE TO DYNAFOCAL MOUNT LEG BROKEN.ENG HAD 107 HRS SINCE REMANUFACTURE.TURBO MT BK 33 1974-11-14 Z197431800073 AIRFRAME 2429S MOUNT RT FWD LEG BROKEN 1,146 1,146 INSP/MAINT OVER 24 MO CESSNA T337/ 3370729 NONE OTHER RIGHT FORWARD ENGINE MOUNT LEG BROKE AT THE MID POINT OF THE LEG. 43 1974-09-03 Z197424600032 AIRFRAME 8922M MOUNT LWR FWD CROSS BROKEN 750 750 INSP/MAINT OVER 24 MO CESSNA 337F 33701322 NONE OTHER REAR ENGINE MOUNT BROKEN AT WELD ATTACHING RT END AND LWR FWD CROSSMEMBER TO RES T OF MOUNT. 7 1974-06-11 Z197416200060 AIRFRAME 689CP REAR ENG MOUNT CRACKED 0 0 INSP/MAINT OVER 24 MO CESSNA 337 0330 NONE OTHER LT MLG BRACKET ASSY CRACKED AND MFG DEFECT. (Less significant items below) 1 1982-12-09 WP02198288135 AIRFRAME 9CM G MOUNTS FRONT ENG SAGGING 35 35 APPROACH UNCOMMON CESSNA T337G P3370034 NONE FLUID LOSS, UNKNOWN SAGGING ENG MNTS CAUSED OIL FILTER TO BE CHAFED BY NOSE WHEEL WELL STRUCTURE RESULTED IN OIL LOSS. 29 1974-11-08 Z197431200031 AIRFRAME 1840M ENGINE MOUNT LWR RT CLUSTER CRACKED 409 409 INSP/MAINT OVER 24 MO CESSNA 337 33701440 NONE OTHER REAR ENG MOUNT CRACKED AT LOWER RT CLUSTER.FOUND DURING 100 HR INSP
RELATES TO NOSE GEAR Row Date Of Report Operator Control Number Segment Date Of Occurrence Aircraft Registration Operation Type Descriptive Name Of Part Defective Location On Aircraft Failed Part Condition Part Total Time Part Total Time Since Overhaul Component Manufacturer Component Manufacturer Model Component Manufacturer Number Stage Of Operation Severity Factor Aircraft Manufacturer Aircraft Manufacturer Model Aircraft Manufacturer Number Precautionary Procedures Nature Of Condition zxcvbRemarkszxcvb 40 1992-08-10 92ZZZX7528 AIRFRAME 1992-07-08 62NA G BOLT NLG TORQUE LINK BROKEN 0 0 INSP/MAINT FREQUENT CESSNA T337G P3370269 NONE OTHER DURING ROUTINE MAINTENANCE, FOUND NOSE GEAR STRUT TORQUE LINK BOLT BROKEN OFF AT THE HEAD, AND BOLT HAD WORKED ITS WAY HALF OUT OF THE TORQUE LINK. THIS PART IS HARD TO SEE ON PREFLIGHT. 22 1984-07-23 SW61198481731 AIRFRAME 86452 G BOLT NOSE AXLE BROKEN 1,294 1,294 INSP/MAINT NEVER CESSNA T337E 33701199 NONE OTHER NLG AXLE BOLT BROKEN 1/4 INCH FROM HEAD. 20 1979-08-10 Z197922200033 AIRFRAME 444HR BOLT NLG WHEEL WELL SHEARED 16 16 INSP/MAINT UNCOMMON CESSNA T337H 33701900 NONE OTHER NLG WOULD NOT FULLY EXTEND DURING RETRACT CHECK.FOUND UPPER TORQUE LINK BOLT SHE ARED & LOWER BOLT ALMOST SHEARED 28 1976-02-17 Z197604800042 AIRFRAME 2MIL BOLT NLG UPLOCK BROKEN 3,000 3,000 APPROACH OVER 24 MO CESSNA 337B 6810853 NONE OTHER NOSE LANDING GEAR UPLOCK BOLT SHEARED. APPEARED TO HAVE PREVIOUS CRACKED. (Less significant items below; large number of them because many deal with a plastic spring guide later changed to steel) 2 2009-03-17 2009FA0000191 AIRFRAME 2009-03-08 302A G CYLINDER HEAD MLG STRUT CRACKED 3,600 800 INSP/MAINT CESSNA M337B M3370331 NONE FLUID LOSS WHILE INVESTIGATING A HYD FLUID LEAK IN THE NOSE WHEEL WELL, LOCATED CRACK IN THE RETRACT CYLINDER HEAD BETWEEN THE ATTACH BOLT/BUSHING BOSS AND THE BARREL THREADS, IN THE UPPER RADIUS. THERE WERE NO TOOL MARKS TO CREATE A STRESS RISER, AND NO HARD LANDINGS NOTED. THIS WAS NOT VISIBLE, WITHOUT REMOVING THE RETRACT CYLINDER, AS IT WAS HIDDEN BY THE ATTACH STRUCTURE IN THE WHEEL WELL. APPROX 800 FLIGHT HOURS AND 19 YEARS SINCE LAST CYLINDER REMOVAL/RE-SEAL. 23 2001-08-08 AUS20010418 AIRFRAME 2001-05-04 G RIVET FUSELAGE DAMAGED INSP/MAINT CESSNA 337 NONE OTHER (AUS) NOSE LANDING GEAR WHEEL PAN/FIREWALL STRUCTURE RIVETS PULLED. FAILED RIVETS LOCATED IN THE AFT LT TOP CORNER. 24 1994-07-05 94ZZZX3620 AIRFRAME 1993-01-04 470DF G ROD END BUNGEE ASSY BENT 0 0 INSP/MAINT OCCASIONAL CESSNA M337B 337M0254 NONE OTHER BENT ROD END ON STEERING BUNGEE ASSY. SUBMITTER SUSPECTS CAUSED BY EXCESSIVE PEDAL PRESSURE AT THE TURN LIMIT OF NOSE WHEEL ASSY. 32 1985-12-05 WP08198588533 AIRFRAME 1985-07-18 5475S G SPRING NLG DWN LOCK BROKEN 0 0 LANDING FREQUENT CESSNA 337B 3370575 NONE OTHER, VIBRATION/BUFFET NOSE WHEEL COLLAPSED ON LANDING. FOUND NLG DWN LOCK SPIRNG GUIDE-PLASTIC-BRKN. ME84-1 HAS STEEL REPLACEMENT. 37 1984-11-16 EA22198487608 AIRFRAME 556NA G ROD END DEFECTIVE 0 0 INSP/MAINT OCCASIONAL CESSNA T337B 3370705 NONE OTHER NOSE LANDING GEAR STEERING ROD END DEFECTIVE. 35 1984-10-15 NM64198486025 AIRFRAME 1425M G GUIDE NG DOWNLOCK BROKEN 886 886 APPROACH UNCOMMON CESSNA T337G P3370162 OTHER WARNING INDICATION NO NLG DOWN + LOCK INDICATION. FOUND NLG DOWNLOCK SPRING GUIDE BROKEN. 15 1984-06-20 NM03198479624 AIRFRAME 86255 G SPRING GUIDE NLG ACTU BROKEN 0 0 INSP/MAINT FREQUENT CESSNA T337D 1130 NONE OTHER NLG SRING GUIDE EAR BROKEN. 47 1984-01-04 NM61198470106 AIRFRAME 42WA G ROD NWS BENT 2,750 2,750 TAKEOFF OCCASIONAL CESSNA T337G P3370205 OTHER WARNING INDICATION NLG FAILED TO RETRACT. FOUND NWS ROD BENT PREVENTING STRUT FROM CENTERING. 12 1981-07-15 WP09198184135 AIRFRAME 740M G GUIDE SPRING DOWN LOCK BROKEN 2,370 2,370 LANDING FREQUENT CESSNA 337 3370160 NONE NO WARNING INDICATION NOSE GEAR COLLAPSED ON LANDING ROLL. THE NLG DOWN LOCK SPRING GUIDE HAD BROKEN + A POSITIVE DWN + LOCK WAS NOT MADE . 45 1981-05-15 NM67198180467 AIRFRAME 53405 G SPRING GUIDE NLG DN LOCK BROKEN 2,891 2,891 INSP/MAINT FREQUENT CESSNA 337G 01602 NONE OTHER NO TEXT. 15 1981-02-25 SW99198173966 AIRFRAME 72382 G GUIDE NLG DN LK SPG BROKEN 2,271 2,271 INSP/MAINT FREQUENT CESSNA 337G 01572 NONE OTHER NOSE GEAR WOULD NOT STAY UP AND LOCKED. 46 1981-01-23 EA11198171274 AIRFRAME 85869 G PISTON ROD NLG DOORACTU BROKE 1,411 1,411 12805135 12805135 1108 INSP/MAINT UNCOMMON CESSNA 337D 3371005 NONE OTHER NLG DOOR ACTU ROD BROKE OFF APPROX 2 THREADS INSIDE ROD END 16 1980-09-12 WP09198078445 AIRFRAME 1280M G SPRING GUIDE NLG LOCKING BROKEN 1,550 1,550 INSP/MAINT FREQUENT CESSNA T337E T3371280 NONE OTHER PLASTIC SPRING GUIDE BROKE ON ONE SIDE. 30 1979-09-11 Z197925400007 AIRFRAME 1397L GUIDE NLG DWNLOCK BROKEN EARS 71 71 UNKNOWN FREQUENT CESSNA 337H 33701889 NONE OTHER NLG DOWNLOCK GUIDE EARS BROKEN 13 1979-08-02 Z197921400037 AIRFRAME 2435S BRACE NLG BENT 458 458 LANDING FREQUENT CESSNA T337B 3370745 OTHER OTHER NLG DOWN STOP PLATE BENT 2 1979-06-28 Z197917900064 AIRFRAME 9LF BRACKET NLG CRACKED 863 863 INSP/MAINT OCCASIONAL CESSNA 337F 33701327 NONE OTHER FOUND NOSE STEERING BRACKET CRACKED FROM LIGHTENING HOLE TO FWD EDGE 42 1979-05-15 Z197913500042 AIRFRAME 1293M BRACKET NLG UPLOCK BROKEN 4,140 4,140 INSP/MAINT FREQUENT CESSNA T337E 01293 NONE OTHER FOUND NLG UPLOCK BRACKET BROKEN AFT END CAUSE WEAK BRACKET 17 1979-02-08 Z197903900066 AIRFRAME 7CT GUIDE SPRING NLG DN LOCK BROKEN 0 1,300 INSP/MAINT FREQUENT CESSNA T337G P3370008 NONE OTHER PLASTIC SPRING GUIDE BROKE LETTING NLG COLLAPSE CAUSING DAMAGE TO PROP. 48 1978-12-14 Z197834800043 AIRFRAME 2717X BRACKET NLG BROKE 0 0 TAXI/GRND HDL OCCASIONAL CESSNA 337 3370117 NONE OTHER NOSE STEERING BRACKET FAILED UNDER NORMAL SERVICE CAUSING LOSS OF NOSE STEERING WHILE TAXING. 32 1978-07-31 Z197821200104 AIRFRAME 25905 SPRING NLG CENTERING STRETCHED 2,017 2,017 TAXI/GRND HDL OVER 24 MO CESSNA 337 3370890 NONE OTHER NLG COLLAPSED AFTER LANDING.FOUND NLG CENTERING SPRING STRETCHED. 21 1978-04-06 Z197809600085 AIRFRAME 32DM ROD ASSY STEERING BENT 2,969 2,969 INSP/MAINT OVER 24 MO CESSNA 337 0049 NONE OTHER 19 1978-04-06 Z197809600083 AIRFRAME 32DB BUNGEE ASSY ROD END BROKEN 0 0 INSP/MAINT OVER 24 MO CESSNA 337 0049 NONE OTHER 40 1976-03-11 Z197607100054 AIRFRAME 86513 EYEBOLT RT FRT NLG DOOR BROKEN 1,289 1,289 INSP/MAINT OVER 24 MO CESSNA 337E 33701216 NONE OTHER BOLT ATTACHMENT TO DOOR HINGE BROKE OFF. DURING PREFLT PILOT NOTICED DOOR HANGIN G DOWN. 14 1975-12-30 Z197536400043 AIRFRAME 2310S NLG BUMPER NLG WELL BENT 1,840 1,840 INSP/MAINT OVER 24 MO CESSNA T337B 0610 NONE OTHER NLG BUMPER BENT & DEFORMED AFT CAUSING NOSE GEAR TO MOVE AS RUDDER PRESSURE APPL IED AFTER LIFT OFF.
RELATES TO RUDDER/BRAKE PEDALS AREA Row Date Of Report Operator Control Number Segment Date Of Occurrence Aircraft Registration Operation Type Descriptive Name Of Part Defective Location On Aircraft Failed Part Condition Part Total Time Part Total Time Since Overhaul Component Manufacturer Component Manufacturer Model Component Manufacturer Number Stage Of Operation Severity Factor Aircraft Manufacturer Aircraft Manufacturer Model Aircraft Manufacturer Number Precautionary Procedures Nature Of Condition zxcvbRemarkszxcvb 39 2003-01-14 CA021125010 AIRFRAME 2002-11-21 G BRACKET RUDDER CRACKED INSP/MAINT CESSNA 337A NONE OTHER (CAN) CRACK FOUND ON BOTH INBOARD RUDDER TORQUE TUBE MOUNTING BRACKETS. THE CRACK BEGAN AT THE AFT END OF THE BRACKET, EXTENDING FORWARD APPROXIMATELY 3-4 INCHES ON THE LT BRACKET AND 1/2 INCH FORWARD ON THE RT BRACKET. THE CRACK OCCURRED AT THE BEND RADIUS ON THE OUTER PIECE OF THE BRACKET. 24 2001-08-08 AUS20010419 AIRFRAME 2001-05-04 G TORQUE TUBE RUDDER CONTROL DAMAGED INSP/MAINT CESSNA 337 NONE OTHER (AUS) RUDDER PEDAL TORQUE TUBE CLAMP SUPPORT STRUCTURE CRACKED ANDWORKING. LOOSE RIVETS AND DAMAGE CAUSED BY BELLCRANK. 11 2001-05-15 CA010504017 AIRFRAME 2001-04-16 A SUPPORT BRACKET RUDDER PEDAL CRACKED 7,253 CESSNA 337C 3370895 INSP/MAINT CESSNA 337C NONE OTHER (CAN) DURING A 100 HOUR INSPECTION IT WAS OBSERVED THERE WA A CRACK IN THE ABOVE MENTIONED BRACKET. A NEW BRACKET WAS INSTALLED AND AIRCRAFT RELEASED FOR RETURN TO SERVICE. 40 1998-01-08 98ZZZX154 AIRFRAME 1997-12-26 9739D G SUPPORT ASSY RUDDER BAR CRACKED INSP/MAINT CESSNA 337A 3370466 NONE OTHER PILOT COMPLAINED OF INCONSISTENT RUDDER TRIM INPUTS TO MAINTAIN COORDINATED FLIGHT AND 'FUNNY' RUDDER CONTROL INPUTS. INSPECTION REVEALED BOTH CENTER RUDDER BAR SUPPORTS CRACKED ALLOWING RUDDER BAR TO WANDER WHEREVER IT WANTED TO GO. AIRCRAFT HAS HISTORY OF LANDING ACCIDENTS WHEN REGISTERED IN A FOREIGN COUNTRY, BUT THIS IS A NEW DISCREPANCY WITH NO PREVIOUS CONTROL SYSTEM PROBLEMS. 39 1998-01-08 98ZZZX153 AIRFRAME 1997-12-26 9739D G SUPPORT ASSY RUDDER BAR CRACKED INSP/MAINT CESSNA 337A 3370466 NONE OTHER PILOT COMPLAINED OF INCONSISTENT RUDDER TRIM INPUTS TO MAINTAIN COORDINATED FLIGHT AND 'FUNNY' RUDDER CONTROL INPUTS. INSPECTION REVEALED BOTH CENTER RUDDER BAR SUPPORTS CRACKED ALLOWING RUDDER BAR TO WANDER WHEREVER IT WANTED TO GO. AIRCRAFT HAS HISTORY OF LANDING ACCIDENTS WHEN REGISTERED IN A FOREIGN COUNTRY, BUT THIS IS A NEW DISCREPANCY WITH NO PREVIOUS CONTROL SYSTEM PROBLEMS. 42 1995-10-20 95ZZZX5770 AIRFRAME 1995-08-07 471DF G SUPPORT ASSY INBD RUD BAR CRACKED 384 INSP/MAINT CESSNA T337B 337M0246 NONE OTHER DURING NR 2 PROGRESSIVE INSPECTION, THE MOUNT WAS NOTICED FLEXING DURING RUDDER APPLICATION. THIS BRACKET HAD BEEN REPLACED FOR THE SAME REASON DURING THE ANNUAL ON 5-94. THIS HAS BEEN AN ONGOING PROBLEM WITH ACFT, APPROXIMATELY 6 CHANGES, 13 ACFT IN THE FLEET. 25 1994-07-11 94ZZZX3788 AIRFRAME 1993-12-22 470DF G SUPPORT ASSY RUDDER PEDAL CRACKED 6,200 0 INSP/MAINT UNCOMMON CESSNA M337B 337M0254 NONE OTHER RUDDER PEDAL SUPPORT BRACKETS WERE CRACKED AT FLANGE RADII OF FLANGE TO FIRE WALL STRUCTURE ATTACHMENT - CAUSE IS BELIEVED TO BE TOO MUCH PEDAL PRESSURE WITH FLEXING OF THE STRUCTURE DURING BRAKING AND TURNS. THE CRACK IS APPROXIMATELY ONE-HALF THE LENGTH OF THE FLANGE. THREE A/C THIS YEAR HAVE BEEN CRACKED, ONE LAST YEAR. ALL FOUND DURING ANNUAL. RECOMMEND ONE-TIME INSPECTION OF ALL 337 TYPE A/C. 23 1994-07-05 94ZZZX3619 AIRFRAME 1993-01-04 470DF G SUPPORT ASSY RUDDER BAR CRACKED 6,171 0 INSP/MAINT UNCOMMON CESSNA M337B 337M0254 NONE OTHER BOTH LT AND RT RUDDER BAR SUPPORT BRACKETS ON THIS AIRCRAFT HAVE CRACKED AND WERE LOCALLY REPAIRED. IN ALL CASES, THE CRACKS HAVE BEEN IN THE SAME LOCATIONS. THIS HAS BEEN THE SIXTH A/C OVERALL IN WHICH REPAIRS WERE MADE SO FAR. 22 1994-07-05 94ZZZX3615 AIRFRAME 1993-12-22 473DF G SUPPORT ASSY BRAKE PEDAL CRACKED 7,044 0 INSP/MAINT FREQUENT CESSNA 337B 337M0296 NONE OTHER DURING ANNUAL INSPECTION OF THE AIRFRAME, STRUCTURE NOTICED TO MOVE WHEN PEDALS WERE POSITIONED TO THE FULL TRAVEL. SUPPORT BRACKET CRACKED IN THE RADII OF THE MOUNTING FLANGE TO FIREWALL. 21 1994-07-05 94ZZZX3614 AIRFRAME 1993-12-22 467DF G SUPPORT ASSY BRAKE PEDAL CRACKED 5,801 0 INSP/MAINT FREQUENT CESSNA 337B 337M0290 NONE OTHER DURING ANNUAL INSPECTION OF THE AIRFRAME, NOTICED STRUCTURE MOVED WHEN PEDALS WERE POSITIONED TO THE FULL TRAVEL. SUPPORT BRACKET WAS CRACKED IN THE RADII OF MOUNTING FLANGE AT THE FIREWALL. 12 1985-05-09 CE65198577004 AIRFRAME 59N G SUPPT BRACKET RH RUDDER PEDAL BROKEN/CRACKED 2,520 2,520 INSP/MAINT UNCOMMON CESSNA T337H 33701854 NONE OTHER BOTH INBOARD RUDDER PEDAL BEARING SUPPORT BRACKETS BROKEN AND CRACKED. TWO SDRS. 11 1985-05-09 CE65198577003 AIRFRAME 59N G SUPPORT BRACKET LH RUDDER PEDAL BROKEN/CRACKED 2,520 2,520 INSP/MAINT UNCOMMON CESSNA T337H 33701854 NONE OTHER BOTH INBOARD RUDDER PEDAL BEARING SUPPORT BRACKETS BROKEN AND CRACKED. TWO SDRS. 8 1985-05-02 CE65198576610 AIRFRAME 88N G SUPPORT BRACKET LEFT INBOARD CRACKED 2,361 2,361 INSP/MAINT UNCOMMON CESSNA T337H 33701947 NONE OTHER LEFT INBOARD RUDDER PEDAL BEARING SUPPORT CRACKED. 3 1985-04-05 SW64198575034 AIRFRAME 714G G SUPPORT BRACKET LT I/B MNT FLNG CRACKED 5,689 5,689 INSP/MAINT UNCOMMON CESSNA 337G 33701728 NONE OTHER BOTH LEFT AND RIGHT SUPPORTS WERE CRACKED ALONG RADIUS OF I/B MNTNG FLANGE + AT BRNG BLOCK MNT PLATES. CRACKS ABOUT 2 INCHES LONG. 2 1985-04-05 SW64198575033 AIRFRAME 714G G SUPPORT BRACKET RT I/B MNT FLNG CRACKED 5,689 5,689 INSP/MAINT UNCOMMON CESSNA 337G 33701728 NONE OTHER BOTH LEFT AND RIGHT SUPPORTS WERE CRACKED ALONG RADIUS OF I/B MNTNG FLANGE + AT BRNG BLOCK MNT PLATES. CRACKS ABOUT 2 INCHES LONG. 47 1985-01-16 SO64198570822 AIRFRAME 86285 G BRACKET CONTR RUD BAR CRACKED 3,839 3,839 INSP/MAINT UNCOMMON CESSNA 337D 3371142 NONE OTHER CENTER RUDDER BAR SUPT BRCKTS CRACKED. 8 1981-12-17 GL65198193638 AIRFRAME 5302S G BAR SUPPORT PILOTS RT EDAL CRACKED 2,200 2,200 NOT REPORTED UNCOMMON CESSNA 337 3370402 NONE OTHER THE RUDDER TORQUE TUBE SUPPORT RACKED T PILOTS RH PEDAL. 39 1981-04-29 EA03198179364 AIRFRAME 2278X G SUPPORT L-R RUD BAR CRACKED 2,251 2,251 INSP/MAINT UNCOMMON CESSNA 337 3370178 NONE OTHER SUSPECT CRACKING CAUSED BY METAL FATIGUE. 28 1980-10-17 WP01198080313 AIRFRAME 2144X G SUPPORT PEDAL TORQ TUBES CRACKED 3,350 3,350 INSP/MAINT UNCOMMON CESSNA 337 3370044 NONE OTHER SUPPORTS MOUNTED ON THE FIREWALL AND WHICH HOLDS THE RUDDER PEDAL TORQUE TUBES C RACKED. 18 1978-04-06 Z197809600082 AIRFRAME 32DB RUDDER BAR FIREWALL ASSY CRACKED 2,969 2,969 INSP/MAINT OVER 24 MO CESSNA 337 0049 NONE OTHER 12 1978-03-29 Z197808800043 AIRFRAME SUPPORT ASSY FIRE WALL CRACKED 2,118 2,118 INSP/MAINT OVER 24 MO CESSNA 337 0379 NONE OTHER BOTH INBOARD RUDDER BAR SUPPORT ASSY FOUND CRACKED APPROX 2 INCHES 13 1977-12-27 Z197736100030 AIRFRAME 2217X SUPPORT RUDDER BARS CRACKED 2,590 2,590 UNKNOWN OVER 24 MO CESSNA 337 3370117 NONE UNKNOWN PART BADLYCRACK,MAY FAIL,CAUSING LOSS OF USE OF RUDDER,AND NOSE STEARING. 28 1977-09-15 Z197725800079 AIRFRAME 86395 PEDAL SUPPORT COCKPIT BROKEN 1,000 1,000 INSP/MAINT OVER 24 MO CESSNA 337D 3371171 NONE OTHER CUSTOMER COMPLAINED RUDDER TRIM NOT FUNCTIONING PROPERLY. FOUND RUDDER PEDAL SUP PORT. 40 1974-11-22 Z197432600088 AIRFRAME 5367S SUPPORT RUDDER BAR CRACKED 2,003 2,003 UNKNOWN OVER 24 MO CESSNA 337A 3370467 NONE OTHER BOTH SUPPOORT ASSYS CRACKED AT CNTR RUDDER BAR BEARING ATCH, LT 1513500-13, RT 1 51300-14 (Less significant items below) 38 1980-05-22 SO65198070830 AIRFRAME 1443S G PIN FIREWALL HANGS 100 100 DESCENT FREQUENT CESSNA 337H 33701918 NONE UNKNOWN DURING DESCENT IN STEEP RT SPIRAL RUDDER PEDAL HUNG IN FULL FWD POSITION.CLEVIS PIN THAT ATTACHES BRAKE LINK TO RUD
RELATES TO CABIN DOOR Row Date Of Report Operator Control Number Segment Date Of Occurrence Aircraft Registration Operation Type Descriptive Name Of Part Defective Location On Aircraft Failed Part Condition Part Total Time Part Total Time Since Overhaul Component Manufacturer Component Manufacturer Model Component Manufacturer Number Stage Of Operation Severity Factor Aircraft Manufacturer Aircraft Manufacturer Model Aircraft Manufacturer Number Precautionary Procedures Nature Of Condition zxcvbRemarkszxcvb 47 1990-08-30 WP099095341 AIRFRAME 1990-05-22 772H G ROD ASSEMBLY FWD TORQUE TUBE BENT/BROKE 0 0 INSP/MAINT NEVER CESSNA T337G P3370265 NONE OTHER THIS LINK BROKE, IT WOULD NOT ALLOW THE TORQUE TUBE TO ROTATE AND UNLATCH THE ENTRY DOOR. THE PILOT WAS TRAPPED IN THE AIRCRAFT FOR 2.5 HOURS BEFORE A SUCCESSFUL EGRESS COULD BE EXECUTED. 50 1984-01-23 GL14198471491 AIRFRAME 12G G DOOR LOCK UPR CAB DOOR WIRE BROKEN 1,058 1,058 INSP/MAINT NEVER CESSNA T337G P3370265 NONE OTHER AFT CABIN DOOR LOCK WIRE BROKEN OFF INSIDE OF DOOR. 27 1983-07-15 SW99198381529 AIRFRAME 86106 G OUTER DOOR SKIN CABIN DOOR CORROSION 2,205 2,205 INSP/MAINT NEVER CESSNA 337D 1083 NONE OTHER FOUND CORROSION ON INNER SURFACE OF OUTER DOOR SKIN, CAUSED BY WATER ABSORBING INTO FIBERBOARD BACKING. 36 1981-04-22 CE64198178906 AIRFRAME 4KP G LOCK PIN UPR DR LATCH MISSING 1,409 1,409 INSP/MAINT NEVER CESSNA T337G P3370255 NONE OTHER COULD NOT OPEN UPPER CABIN DOOR-FOUND SPRING CLIP AND BALL MISSING FROM LOWER FW D UPPER DOOR LATCH LOCK MECHANISM. 33 1980-05-15 SW66198070281 AIRFRAME 255 G CASING CABIN DOOR SLIPPED 784 784 NOT REPORTED NEVER CESSNA T337G P3370213 NONE OTHER UNABLE TO OPEN CABIN DOOR BECAUSE SPIRAL CASING WORKED DN THRU CLAMP INTO SLEEVE P/N1517120-13 + ACTUATES LOCK PIN. 3 1979-06-28 Z197917900085 AIRFRAME 912JF ROD END BENT 127 127 151140048 INSP/MAINT NEVER CESSNA P337H 3370315 NONE OTHER UNABLE TO OPEN UPPER CABIN DOOR.FOUND ROD END TO UPPER LATCH BENT WHERE FALURE O CCURRED. 31 1978-11-03 Z197830700104 AIRFRAME 4BZ LATCH LINK EYE CABIN DOOR BROKEN 0 0 INSP/MAINT NEVER CESSNA P337H P3370308 NONE OTHER CABIN DOOR COULD NOT BE OPENED FROM INSIDE DUE TO DOOR LATCH LINKAGE EYE BROKE O FF. 22 1978-10-12 Z197828500029 AIRFRAME 4BX EYE CABIN DOOR BROKEN 82 82 TAXI/GRND HDL NEVER CESSNA P337H P3370307 NONE OTHER CREW UNABLE TO DEPART AC,REQUIRED OUTSIDE ASSISTANCE TO DISASSEMBLE DOOR.FOUND U PPER CABIN DOOR FWD LATCH EYE BROKE 6 1978-03-22 Z197808100028 AIRFRAME 15UC UPPER DOOR CABIN SEPARATED 520 520 CLIMB OVER 24 MO CESSNA T337G P3370216 UNSCHED LANDING INFLIGHT SEPARATION UPPER DOOR BLEW OPEN AND DEPARTED AIRCRAFT AT 8800 FT ALTITUDE.DOOR HAS NOT BEEN LOCATED 18 1977-04-18 Z197710800049 AIRFRAME 255 HOUSING CABIN DOOR SLIPPED 312 312 TAXI/GRND HDL OVER 24 MO CESSNA 337 P3370213 OTHER OTHER CABIN DOOR FRONT CONTROL LOCK CABLE HOUSING SLIPPED DN & LOCK LINKS WOULD NOT DISENGAGE & OPEN DOOR 16 1974-10-01 Z197427400034 AIRFRAME 9CT SHAFT,JOINT DRILLED HOLE FAILED 275 275 INSP/MAINT OVER 24 MO CESSNA T337G P3370011 NONE OTHER UNABLE TO OPEN CABIN DOOR FROM INSIDE OR OUTSIDE. HAD TO REMOVE UPHOLSTERY PANEL S AND PRYED LATCHES OPEN.
RELATES TO MISCELLANEOUS AREAS Row Date Of Report Operator Control Number Segment Date Of Occurrence Aircraft Registration Operation Type Descriptive Name Of Part Defective Location On Aircraft Failed Part Condition Part Total Time Part Total Time Since Overhaul Component Manufacturer Component Manufacturer Model Component Manufacturer Number Stage Of Operation Severity Factor Aircraft Manufacturer Aircraft Manufacturer Model Aircraft Manufacturer Number Precautionary Procedures Nature Of Condition zxcvbRemarkszxcvb 29 1988-01-06 SO648870412 AIRFRAME 1987-09-25 53670 G PULLEY BRKT UNDER PILOT FLR BROKEN 1,303 1,303 NOT REPORTED OCCASIONAL CESSNA 337G 33701769 NONE OTHER BRACKET HAD OUTBOARD CORNER WHERE ATTACH BOLT GOES THROUGH BROKEN OFF. PULLEY WAS FORCED SIDEWAYS BY CABLE TENSION. THE PULLEY WAS STILL TURNING, BUT AT EITHER EXTREME RIGHT OR LEFT CONTROL WHEEL MOVEMENT, THE CABLE WOULD START TO WALK OFF PULLEY. SUBMITTER SUGGEST STRONGER BRACKET, ESPECIALLY AT 90 DEGREE CABLE TURNS. 42 1986-04-24 CE628676242 AIRFRAME 1986-04-01 72446 G PULLEY BRACKET UNDER PILOT FLR BROKEN 255 255 INSP/MAINT OCCASIONAL CESSNA 337G 33701587 NONE OTHER OWNER REPORTED THAT AILERONS WERE OUT OF RIG. INVESTIGATION SHOWED THAT PULLEY BRACKET BELOW PILOTS FEET. WAS BROKEN, WHICH ALLOWED TENSION TO SLACKEN. CESSNA MULTI-ENGINE SERVICE LETTER ME 76-21 W/REV NR 1 CALLED FOR AN INSPECTION AND POSSIBLE REPLACEMENT OF THE BRACKET WITH NEW P/N 1513883-1. ME-74-5 ALSO MENTIONED THIS PROBLEM. NEITHER SERVICE LETTER APPLIES TO THIS S/N. 23 1978-10-23 Z197829600031 AIRFRAME 53606 PULLEY BRACKET UNDER FLOOR BROKEN 470 470 APPROACH OCCASIONAL CESSNA 337E 33701735 NONE FLT CONT AFFECTED DURING LANDING PILOT HEARD LOUD BANG & BOTH AILERONS DROOPED.INSP FOUND AILERON PULLEY BRACKET BROKEN.
RELATES TO UNIDENTIFIED AREAS Row Date Of Report Operator Control Number Segment Date Of Occurrence Aircraft Registration Operation Type Descriptive Name Of Part Defective Location On Aircraft Failed Part Condition Part Total Time Part Total Time Since Overhaul Component Manufacturer Component Manufacturer Model Component Manufacturer Number Stage Of Operation Severity Factor Aircraft Manufacturer Aircraft Manufacturer Model Aircraft Manufacturer Number Precautionary Procedures Nature Of Condition zxcvbRemarkszxcvb 43 2007-11-02 UIEA200700462 AIRFRAME 2007-10-24 424 A SKIN NR 4 NACELLE CRACKED INSP/MAINT CESSNA T337G P3370259 NONE OTHER NR 4 PYLON LT SKIN WAS FOUND CRACK AT 483AL ACCESS PANEL CUTOUT LOWER AFT CORNER. 15 1985-05-24 WP08198578015 AIRFRAME 5CU G BELLCRANK ASSY TORN LOOSE 1,618 1,618 INSP/MAINT OCCASIONAL CESSNA T337G P3370066 NONE OTHER DURING ANNUAL INSPECTION FOUND BELLCRANK ASSEMBLY TORN LOOSE FROMSTRUCTURE AND ROD ASSEMBLY BENT. 14 1985-05-24 WP08198578014 AIRFRAME 5CU G ROD ASSY BENT 1,618 1,618 INSP/MAINT OCCASIONAL CESSNA T337G P3370066 NONE OTHER DURING ANNUAL INSPECTION FOUND BELLCRANK ASSEMBLY TORN LOOSE FROMSTRUCTURE AND ROD ASSEMBLY BENT. 30 1981-04-06 CE64198177405 AIRFRAME 159N G BRACKET LEFT BROKEN 4,179 4,179 INSP/MAINT OCCASIONAL CESSNA 337G 33701668 NONE OTHER BRACKET AT FIREWALL + FLOOR-INBOARD EAR BROKE OFF AT BOLT HOLE. 31 1980-10-27 WP04198080745 AIRFRAME 463DF G HALE OUTER BEADED AREA CRACKED 0 0 INSP/MAINT FREQUENT CESSNA 337B 337M0325 NONE OTHER SIX INCH RADIAL CRACK FOUND INSIDE THE BEADED AREA. 1 1980-07-28 EA62198075252 AIRFRAME 1346L G BRACKET ASSY OTBD LWR BELLCRK BROKEN 0 0 INSP/MAINT COMMON CESSNA T337H 33701838 NONE OTHER DAMAGED IN WIND STORM. 28 1979-04-03 Z197909300062 AIRFRAME 1342L SKIN TAIL SECTION CORRODED 107 107 INSP/MAINT UNCOMMON CESSNA 337 3371834 NONE OTHER C-W AD79-05-02 AND FOLLOWING REMOVAL OF ELT LITHIUM BATTERY-FOUND CONSIDERABLE C ORROSION IN ELT MOUNTING AREA. 46 1978-12-04 Z197833800104 AIRFRAME 53606 BRACKET PULLEY-FIREWL BROKEN 470 470 INSP/MAINT OCCASIONAL CESSNA 337 01735 NONE OTHER BOTH EARS OF PULLEY BRACKET BROKEN OFF. 50 1978-08-28 Z197824000112 AIRFRAME 53475 RT SIDE PANEL BLOWN OUT 0 0 INSP/MAINT OVER 24 MO CESSNA 337 33701649 NONE OTHER RT SIDE PANEL CRACKED ALL AROUND COLLECTOR INLET 20 1978-04-06 Z197809600084 AIRFRAME 32DB CHANNEL ASSY BOLT HOLE WORN 2,969 2,969 INSP/MAINT OVER 24 MO CESSNA 337 0049 NONE OTHER 35 1977-10-05 Z197727800038 AIRFRAME 72247 RH OUTBD CRACKED 0 0 INSP/MAINT OVER 24 MO CESSNA 337G 33701545 NONE OTHER CRACK OCCURRED AT DENT & APPARENTLY CAUSED BY VIBRATION 38 1977-01-20 Z197702000068 COMPONENT 1752M CABLE TURNBUCKLE END FRAYED 1,066 1,066 INSP/MAINT OVER 24 MO CESSNA 337 33701352 NONE OTHER COULD HEAR AIL CABLE STRANS RUBBING ON PULLEY BRACKET.INSP REVEALED CABLE HAD FRAYED FROM RUBBING PULLEY BKT 18 1974-10-08 Z197428100050 AIRFRAME 9CT LATCH DRIVE THRU HOLE FAILED 0 0 INSP/MAINT OVER 24 MO CESSNA 337 NONE OTHER END OF LATCH DRIVE SHEARED WHERE ENGAGED BY AFT TORQUE TUBE. HOLE DRILLED IN DRI VE WEAKEN SAME. 8 1974-09-13 Z197425600050 AIRFRAME 5499S BACKPLATE MT FLANGE CRACKED 1,779 1,779 INSP/MAINT OVER 24 MO CESSNA 337 3370599 NONE OTHER CRACKED AROUND MOUNTING FLANGE-BACKPLATE 7 1974-09-13 Z197425600049 AIRFRAME 5499S TORQUE PLATE OUTER FLANGE CRACKED 1,741 1,741 INSP/MAINT OVER 24 MO CESSNA 337 3370599 NONE OTHER CRACKED FROM OUTER FLANGE TO HOLE.
ALL CESSNA 336 "STRUCTURAL" SDRs SHOWN BELOW (not grouped by aircraft area, newest first)
Row Date Of Report Operator Control Number Segment Date Of Occurrence Aircraft Registration Operation Type Descriptive Name Of Part Defective Location On Aircraft Failed Part Condition Part Total Time Part Total Time Since Overhaul Component Manufacturer Component Manufacturer Model Component Manufacturer Number Stage Of Operation Severity Factor Aircraft Manufacturer Aircraft Manufacturer Model Aircraft Manufacturer Number Precautionary Procedures Nature Of Condition zxcvbRemarkszxcvb 36 2003-04-14 CA030227004 AIRFRAME 2003-02-25 A CONTROL CABLE TE FLAPS FAILED NOT REPORTED CESSNA 336 OTHER OTHER (CAN) OPERATOR EXPERIENCED A ASYMMETRIC FLAP CONDITION DURING LANDING CAUSED BY THE FAILURE OF A FLAP CABLE. THE INBOARDRIGHT HAND FLAP CABLE FAILED AT A POINT WHERE THE CABLE STARTS TO BEND AROUND THE INBOARD RIGHT HAND FLAP BELLCRANK. THIS AREA OF THE CABLE CAN ONLY BE INSPECTED WITH THE REMOVAL OF THECABLE AND/OR BELLCRANK 35 2002-04-25 2002FA0000525 AIRFRAME 2002-04-01 108RJ G CABLE RT BELLCRANK BROKEN 2,892 APPROACH CESSNA 336 3360067 OTHER FLT CONT AFFECTED ON FINAL APPROACH, AIRCRAFT EXPERIENCED A SPLIT FLAP CONDITION, CAUSED BY BROKEN CABLE ASSEMBLY. FLAP ACTUATOR INBOARD(PN 14601007). CABLE HAD BROKEN ON RIGHT SIDE, 1 INCH FROM CABLE END, AT BELLCRANK ENTRY POINT. INSPECTION OF LEFT SIDE FLAP CABLE ASSEMBLY WITH A MIRROR, REVEALED NO NOTICEABLE DAMAGE. ALL CABLES FOR RIGHT AND LEFT FLAP SYSTEM WERE REMOVED AND INSPECTED. LEFT CABLE ASSEMBLY. FLAP ACTUATOR INBOARD, WAS FRAYED AT SAME CONTACT POINT AS RIGHT, (NOT DETECTED BY MIRROR INSPECTION). DUE TO AREA OF BREAKAGE, HAVING LIMITED POSSIBLY FOR VISUAL INSPECTION, RECOMMEND SET TIME PERIOD FOR CABLES TO BE REMOVED FOR INSPECTION OR TIME IN SERVICE REQUIREMENTS SET FOR REMOVAL. 33 2000-04-06 20000331SH019 AIRFRAME 2000-03-03 3856U G SHOCK MOUNT FIREWALL FAILED 1,841 TAXI/GRND HDL CESSNA 336 33610156 OTHER OTHER DIFFICULT TO INSPECT. PILOT HEARD AND NOTICED COWL RUBBING PROPELER SPINNER DURING SHUT DOWN AT FUEL PIT AT MADERA AIRPORT. (X) 30 1984-12-19 NE65198489369 AIRFRAME 3823U G CABLE LT WING FRAYED 26,000 26,000 INSP/MAINT UNCOMMON CESSNA 336 3360123 NONE OTHER LEFT FLAP CABLE STRANDS BROKEN. APPROXIMATELY 75 PERCENT OF STRANDS BROKEN. 29 1984-12-19 NE65198489368 AIRFRAME 3823U G CABLE RT WING BROKEN 26,000 26,000 APPROACH UNCOMMON CESSNA 336 3360123 OTHER FLT CONT AFFECTED RIGHT FLAP FAILED TO FULLY EXTEND. FOUND INBOARD CABLE BROKEN AT 90 DEGREE BEND AT INBOARD BELLCRANK. 27 1981-09-09 WP02198188042 AIRFRAME 1797Z G MOUNT LT FRNT MOUNT CRACKED 1,818 1,818 INSP/MAINT UNCOMMON CESSNA 336 3360097 NONE OTHER NO TEXT 24 1979-10-03 Z197927600055 AIRFRAME 3850U HORIZ FIREWALL UNDER EXH CRACKED 0 0 UNKNOWN NEVER CESSNA 336 3360150 NONE OTHER HORIZONTAL FIREWALL ASSY CRACKED ALONG ANGLE BRACKET DIRECTLY UNDER EXHAUST-REAR ENGINE. 20 1977-03-02 Z197706100026 AIRFRAME 3844U MOUNT REAR ENG CRACKED 748 748 INSP/MAINT OVER 24 MO CESSNA 336 3360144 NONE OTHER DURING ANNUAL INSP FOUND RT FRONT ENG MOUNT BROKEN & RT REAR ENG MOUNT CRACKED 19 1977-03-02 Z197706100024 AIRFRAME 3844U BRACKET FORWARD ENG BROKEN 748 748 INSP/MAINT OVER 24 MO CESSNA 336 3360144 NONE OTHER DURING ANNUAL INSP RT FRONT ENG MOUNT BROKEN & RT REAR ENG MOUNT CRACKED 16 1976-09-27 Z197627100035 AIRFRAME 1702Z TANK ASSY SUMP LEFT TAIL BOOM HOLE CHAFED 2,191 2,191 INSP/MAINT OVER 24 MO CESSNA 336 3360002 NONE OTHER ELEVATOR CONTROL CABLES CHAFED THRU TOP OF SUMP TANK 6 1975-01-23 Z197502300072 AIRFRAME 336JL MT LEG RT LEG BROKEN 1,386 1,386 UNKNOWN OVER 24 MO CESSNA 336 0181 NONE OTHER RT REAR ENG MOUNT LEG BROKEN 1. ConsultResearch Inc. is a 9-year-old Delaware corporation based in South Florida. Its principal business is providing consulting and research services to high-tech firms.
2. Ernie Martin has an MS degree in Mechanical Engineering from Caltech, over 30 years experience in aerospace and aviation, has consulted for various companies (including GE), and has served as an advisor to several government agencies in the U.S.and abroad. In addition, Mr. Martin has piloted and owned 337 Cessna (Skymaster) aircraft for over 10 years (he is on his second one), has participated in all maintenance of said aircraft (including annual inspections), has a Website dedicated to engineering, maintenance and operational aspects of the aircraft at www.SkymasterUS.com, and is a Webmaster of www.337Skymaster.com, which has an active Message Board giving Skymaster owners the opportunity to discuss any aicraft related issue.
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