JASC 8540
Service difficulty reports · 167
Reports filed under 8540 · Reciprocating Engine Rear Section, newest first.
Query with SQL
duckdb -csv -c "SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE jasc_code = '8540' ORDER BY difficulty_date DESC"
Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE jasc_code = '8540' ORDER BY difficulty_date DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
SDR 97ZZZX1884Cam Gear · teeth broken offNOISE HEARD AT IDLE POWER AFTER LANDING THAT SOUNDED LIKE A ROD KNOCK (OR A WELL RUNNING RADIAL ENG). DECIDED TO DISASSEMBLE ENGINE FOR OVERHAUL. FOUND TWO TEETH MISSING FROM CRANK GEAR P/N 536421 AND ONE TOOTH MISSING AND ANOTHER TOOTH CRACKED ON CAM GEAR PSDR 97ZZZX1883Crank Gear · teeth broken offNOISE HEARD AT IDLE POWER AFTER LANDING THAT SOUNDED LIKE A ROD KNOCK (OR A WELL RUNNING RADIAL ENG). DECIDED TO DISASSEMBLE ENGINE FOR OVERHAUL. FOUND TWO TEETH MISSING FROM CRANK GEAR P/N 536421 AND ONE TOOTH MISSING AND ANOTHER TOOTH CRACKED ON CAM GEAR PSDR AU970169Plunger · sticking(AUS) ENGINE DRIVEN FUEL PUMP PLUNGER STICKING - INVESTIGATION FOUND THAT THE PLUNGER WAS JAMMED BY A SLIVER OF ALUMINIUM ALLOY APPROXIMATELY 5MM (0.196IN) IN LENGTH - METAL SLIVER APPEARS TO BE A SECTION OF THE REAR COVER RESULTING FROM THE MACHINING OFTHE FUSDR 97ZZZX1826Crank Gear · screws looseUPON ENGINE DISASSEMBLY FOUND ALL 6 CRANK GEAR RETAINING SCREWS 'GANG WIRED'. IN ADDITION TO NOT BEING LOCK WIRED CORRECTLY, THE CRANK GEAR SCREWS WERE ALL LOOSE. SEE TELEDYNE CONTINENTAL MOTORS SIL 93-15 FOR CORRECT USE OF SAFETY WIRE, KEYS, AND LOCK TABS.SDR 97ZZZX1049Starter Drive · wornSTARTER DRIVE GEAR WEAR UNACCEPTABLE IAW TELEDYNE CONTINENTAL CSB 94-4 EVEN THOUGH THE SERVICE KIT REQUIRED BY TCM CSB 94-4 HAD BEEN PREVIOUSLY INSTALLED AT ENGINE OVERHAUL. SUBMITTER SUGGESTED CSB 94-4 MAY NOT BE SUFFICIENT. RECOMMENDED FLEET DATA BE EXAMINSDR AU970179Adapter · loose(AUS) ENGINE STARTER ADAPTER HARMONIC BALANCER LOOSE - WHEN REMOVED ITWAS FOUND THAT ALL THE ENGINE NEEDLE BEARINGS WERE MISSING (SUSPECT IN SUMP) AND METAL WAS WORN FROM THE BEARING HOSINGSDR 97ZZZX408Gear · failedDURING SPRAY RUN WHEN CROSSING THE FENCE, THE ENGINE BACKFIRED AND QUIT. THE HELICOPTER TRAVELED APPROX 150 FEET IN THE AIR BEFORE THE SKIDS CONTACTED THE GROUND, SKIPPED 75 FEET AND STRUCK A SMALL HILL WHICH BROKE THE SKID AND THE TAIL BOOM AND TAIL ROTOR. SDR 97ZZZX362Drive Gear · bolts failedPILOT REPORTED LOW OIL PRESSURE, AND ALTERNATOR INOP. FOLLOWED MM FOR OIL PRESSURE RELIEF VALVE AND FOUND METAL. REMOVED ALTERNATOR AND FOUND GEAR, FACE, ALTERNATOR DRIVE BOLTS HAD SHEARED.SDR 96ZZZX5947Gear Shaft · wornSTARTER ADAPTER SHAFT GEAR WAS REMOVED FOR INSPECTION AND FOUND TO BE WORN BEYOND ACCEPTABLE LIMITS IAW CSB94-4A.SDR 96ZZZX6160Drive Adapter · wornSTARTER DRIVE GEAR WEAR UNACCEPTABLE IAW TELEDYNE CONTINENTAL CSB 94-4 EVEN THOUGH THE SERVICE KIT REQUIRED BY TCM CSB 94-4 HAD BEEN PREVIOUSLY INSTALLED AT THE ENGINE OVERHAUL. SUSPECT CAUSE: CSB 94-4 MAY NOT BE SUFFICIENT. SUBMITTER RECOMMENDS FLEET DATA SDR 96ZZZX5875Drive Assy · defectiveWHILE C/W AD 960910C, IT WAS DISCOVERED AD 75-8-9R3 HAD NOT BEEN C/W. (REQUIRED REPLACEMENT OF DRIVE ASSY 75288 WITH DRIVE ASSY PN 61174) A CHECK OF AD 75-8-9R3 AND RELATED SB. ENG S/N WAS NOT LISTED. AD APPLICABLE TO S/N 33229-27A TO 41054-27A. NO RECORD SDR 96ZZZX5955Gear Shaft · wornSTARTER ON THE RIGHT ENGINE BEGAN TO WORK INTERMITTENTLY. THE PILOT SAID THE STARTER HAD BEEN TURNING SLOW AND MAKING NOISE. WHEN THE STARTER WAS REMOVED AND TESTED, IT WORKED FINE. THE STARTER ADAPTER SHAFT GEAR WAS REMOVED AND FOUND TO BE WORN BEYOND ACCESDR 97ZZZX1316Bolt · failedTHE ENGINE QUIT SUDDENLY IN CRUISE FLIGHT WITHOUT WARNING AND WOULD NOT RESPOND TO RESTART ATTEMPTS. A NORMAL LANDING WAS MADE IN A FARM FIELD. DISASSEMBLY INSPECTION INDICATED THE FOUR BOLTS (22532) USED TO SECURE THE CRANKSHAFT CLUSTER GEAR (35016) BROKE OSDR CA960808006Adapter · binding(CAN) THE STARTER ADATPER WAS STARTING TO SLIP SO A NEW STARTER ADAPTER (P/N 642083A7) WAS INSTALLED. AFTER THE FIRST FLIGHT THE ENGINE WAS STIFF AND THE STARTER WAS LABORING TO TURN OVER THE ENGINE. THE NEWLY INSTALLED STARTER ADAPTER WAS REMOVED AND FOUND ALSDR 96ZZZX5038Drive Gear · bolts shearedGEAR AND SHAFT ASSEMBLY IS A TWO-PART GEAR HELD TOGETHER BY SIX .25 INCH BOLTS AND THREE .25 INCH PILOT PINS. IT APPEARS THE SIX .25 INCH BOLTS WERE NOT PROPERLY TORQUED AT OVERHAUL AND THEY SHEARED OFF AT 529.6 HOURS SMOH.SDR AU960907Gear · worn(AUS) ENGINE STARTER SHAFT GEAR AND CRANKSHAFT GEAR TEETH WORN ABNORMALLY - ENGINE STARTER KIT PNO EQ6642SDR AU960828Shaft · worn(AUS) ENGINE STARTER SHAFT AND CRANKSHAFT GEAR TEETH WORN - STARTER KIT PNO EQ6642 - SEE MDR 96/0908 FOR FURTHER INFORMATIONSDR 96ZZZX3437Gear · brokenFOUND BROKEN IDLER GEAR IN THE ENGINE THAT DRIVES THE MAGNETO.SDR 96ZZZX4953Adapter · failedDURING SCHEDULED OIL CHANGE, A LARGE QUANTITY OF FERROUS PARTICLES WERE FOUND IN OIL FILTER AND ON DRAIN PLUG. INVESTIGATION REVEALED BEARING FAILURE OF STARTER DRIVE ADAPTER. FORWARD PILOT BEARING WAS COMPLETELY GONE AND CASE BORE DAMAGED. AFT BEARING SUPPSDR AU960749Retainer · broken(AUS) ENGINE LH MAGNETO DRIVE CUSHION RETAINER FAILEDSDR 96ZZZX2766Spring Clutch · failedTWENTY-SIX HOURS AFTER INSTALLING A TCM OVERHAULED ENGINE, STARTER ADAPTER FAILED. INSPECTION SHOWED THAT SPRING CLUTCH FAILED AND WAS UNCOILING INTO ENGINE ACC CASE.SDR AU960708Gear · worn(AUS) LH ENGINE STARTER RING GEAR WORN - BENDIX DRIVE GEAR ON STARTER MOTOR ALSO WORN - ENGINE HAD DIFFICULTY IN CRANKINGSDR CA960604004Oil System · contaminated(CAN)MICARTA MATERIAL FOUND OIL SCREEN, SUSPECT FAILURE OF IMPELLER SHAFT BEARING. AWAITING STRIP REPORT.SDR AU960908Shaft · worn(AUS) ENGINE STARTER SHAFT AND CRANKSHAFT GEAR TEETH WORN EXCESSIVELY -FOUND DURING ENGINE BULK STRIP FOR CRACKED CRANKCASE IN AREA OFNO4 CYLINDER BASE STUDS - THIS ASSEMBLY IS THE IMPROVED TYPE PURCHASED IN KIT FORM FROM CONTINENTAL AS PNO EQ6042SDR AU960856Shaft · worn(AUS) ENGINE CRANKSHAFT LH IDLER GEAR SHAFT ATTACHMENT HOLES ELONGATED,LOCKWIRE BROKEN, BOLTS NECKED AND SHAFT LOOSESDR CA960418201Mounting Pad · mismachined(CAN)MOUNTING HOLE AND PAD FOR ALTERNATOR MACHINED APPROXIMATELY .080 INCH TOO FAR FORWARD CAUSING ALTERNATOR DRIVE GEAR NOT MESHING PROPERLY.SDR 96ZZZX2068Clutch Spring · failedCLUTCH SPRING WOUND ITSELF AROUND STARTER SHAFT GEAR AND WOULD NOT ALLOW ENGINE TO START.SDR 96ZZZX2410Shaft · shearedFOUND DRIVE SHAFT ON AIR CONDITIONING, HYDRAULIC PUMP SHEARED. UPON REMOVAL, SYSTEM HYDRAULIC PUMP SHAFT SPLINES WERE FOUND WORN OUT AND RUSTED. SUBMITTER SUGGESTS SPLINES BE LUBED AT 200-HOUR INTERVALS TO PREVENT THIS PROBLEM FROM RECURRING.SDR 96ZZZX1546Adapter · failedWHEN STARTER WAS ENGAGED, THE PROPELLER MADE APPROXIMATELY ONE-EIGHTH REVOLUTION AND STOPPED. FURTHER ATTEMPTS WITH STARTER WOULD NOT TURN PROPELLER. PROP WAS 'STIFF' TURNING IN DIRECTION OF NORMAL ROTATION. PROP COULD NOT BE TURNED AT ALL IN OPPOSITE DIRECSDR 96ZZZX2246Gear · failedENGINE ABRUPTLY QUIT RUNNING WHILE ON GROUND. INVESTIGATION REVEALED ASSESSORY DRIVE GEAR, WHICH IS A TWO-PIECE GEAR ASSEMBLED AT THE FACTORY, HAD FAILED. THE 6 BOLTS THAT ATTACH THE 2 PIECES HAD SHEARED & THE 3 DOWELS THAT SHOULD BE A PRESS FIT IN BOTH PIECSDR CA960223012Support Assembly · cracked(CAN) RING GEAR SUPPORT ASSEMBLY HAD A CIRCUMFERENTIAL CRACK APPROXIMATELY 16" LONG.SDR AU960293Spring · misaligned(AUS) ENGINE STARTER ADAPTER SPRING TWISTED IN HOUSINGSDR CA960205003Gear Assy Idler · missing teeth(CAN)IN CRUISE THERE WAS A SLIGHT ROUGHNESS FROM #1 ENGINE,FOLLOWED SHORTLY BY ENGINE STOPPAGE & PROP FEATHERING.THE CREW SECURED THE ENGINE & THE FLIGHT WAS COMPLETED WITH AN UNEVENTFUL SINGLE ENGINE LAND ING.UPON ENGINE DISASSEMBLY,THE FUEL PUMP IDLER GEAR WSDR 96ZZZX798Quill Shaft · failedLEFT ENGINE QUIT ON CLIMB-OUT. PROP FEATHERED AIRCRAFT, MADE SAFE LANDING. FOUND HOLE IN CASE UNDER INTERCOOLER FROM FAILED CONNECTING ROD. PROP TURNS FREELY. ENGINE NOT TORN DOWN AT THIS DATE. SUBMITTER SUSPECTS QUILL SHAFT FAILED ALLOWING ENGINE TO OVERSDR 96ZZZX721Clutch Spring · failedDURING CRUISE, PILOT NOTICED OIL COMING OUT OF THE TURBOCHARGER VENT AND ENGINE COWLING ON THE RIGHT ENGINE. THE STARTER/ADAPTER SPRING CLUTCH WAS FOUND TO HAVE APPARENTLY FAILED AND AT LEAST ONE PIECE OF THE SPRING CAME INTO CONTINUOUS CONTACT WITH THE STARTSDR AU960182Bearing · failed(AUS) LH MAGNETO DRIVE BEARING LOCATED IN THE ENGINE ACCESSORY HOUSING FAILED - METAL CONTAMINATION OF OIL SYSTEMSDR CA960202010Rear Section · making metal(CAN)EXCESSIVE CONCENTRATION OF ALUMINUM FLAKES AND METAL SHAVING IN THE OIL SCREEN. NO METAL CONTAMINATION FOUND IN OTHER SECTIONS OF THE ENGINE, ACCESSORIES OR ASSOCIATED SYSTEMS. ENGINE WAS REMOVED FOR INVESTIGATION. REPORT TO FOLLOW.SDR 96ZZZX722Shaft · shearedINSTALLED REBUILT STARTER/ADAPTER AFTER PREVIOUS ONE FAILED AFTER 26 HOURS OF USE. THIS CURRENT ONE, SN 77371, FAILED AFTER 2.5 HOURS AND SIX STARTS DUE TO THE SAME PROBLEM - SHEARED GEAR.SDR AU960089Bearing · disintegrated(AUS) CRANKCASE STARTER ADAPTER GEAR SHAFT NEEDLE BEARING DISINTEGRATED- CRANKCASE DAMAGED - OTHER COMPONENTS DAMAGED WERE OIL PUMP HOUSING, IMPELLERS, ENGINE BEARINGS, STARTER ADAPTER KIT SHAFT PNO EQ6642 AND CRANKSHAFT GEAR - METAL CONTAMINATION OF OILSYSTEMSDR AU960086Split Pin · missing(AUS) MAGNETO IDLER GEAR RETAINING NUT PN STD 43 SEPARATED FROM BOLT PN STD 1860 - NUT AND WASHER PNO 68545 FOUND IN ACCESSORY HOUSING - SUSPECT CAUSED BY LACK OF SPLIT PIN TO LOCK NUT - CARBON DEPOSITS IN SPLIT PIN HOLE INDICATE SPLIT PIN HAD BEEN MISSING FSDR 96ZZZX681Starter Adapter · failedLOST OIL PRESSURE ON LT ENGINE DUE TO LOSS OF OIL VIA BROKEN STARTER ADAPTER. AIR CONDITIONER DRIVEN PULLEY AND DRIVE SHAFT HAD BROKEN LOOSE FROM STARTER/ADAPTER ALLOWING OIL TO ESCAPE OUT DRIVE AREA. WRONG TYPE BELT INSTALLED FOR THE TYPE DRIVE PULLEYS USEDSDR 96ZZZX950Adapter Kit · excess wearON 12-27-95, A 50-HOUR INSPECTION WAS PERFORMED. METAL CONTAMINATION NOTED IN RT ENG OIL FILTER. FURTHER INVESTIGATION REVEALED TORSIONAL DAMPER AND STARTER SHAFT GEAR ASSY WERE LOOSE IN THE STARTER ADAPTER HOUSING. ADAPTER ASSY REMOVED AND FND NEEDLE BEARISDR 96ZZZX179Bearing · failedPILOT REPORTED LOWER OIL PRESSURE, RT ENGINE. TROUBLESHOT TO BROKEN TOOTH ON STARTER ADAPTER SHAFT AND FAILED BEARING IN CRANKCASE. BEARING SUPPORT WAS OVERSIZED, FILLING ENGINE OIL SYSTEM WITH METAL. NO PREVIOUS INDICATION OF C/W TCM CSB NR 94-4 COULD BE FSDR 96ZZZX178Shaft Tooth · brokenPILOT REPORTED LOWER OIL PRESSURE, RT ENGINE. TROUBLESHOT TO BROKEN TOOTH ON STARTER ADAPTER SHAFT AND FAILED BEARING IN CRANKCASE. BEARING SUPPORT WAS OVERSIZED, FILLING ENGINE OIL SYSTEM WITH METAL. NO PREVIOUS INDICATION OF C/W TCM CSB NR 94-4 COULD BE FSDR 95ZZZX6812Gear · failedOIL PUMP GEAR BROKE AND CRACKED THE BODY ASSEMBLY OF THE SCAVENGE PUMP, P/N 640766. REPLACED STARTER ADAPTER WITH A REBUILT, P/N 642085A2.SDR 95ZZZX6148Bearing · failedDURING ROUTINE OIL CHANGE, FND METAL PIECES OF BALL BEARING CAGE IN SUCTION SCREEN. REMOVAL OF LT MAG REVEALED ALMOST TOTAL FAILURE OF LT MAG DRIVE BRG & ITS SLEEVE IN CRANKCASE. SLEEVE HAD BEEN INSTALLED IAW LYC SI NR 1140 DURING ENG O\H. THIS IS 5TH FINDISDR 95ZZZX6392Starter Drive · housing brokenSTARTER DRIVE HOUSING CRACKED. SUBMITTER SUSPECTS BACKFIRING DURING STARTING.SDR 95ZZZX6147Adapter · wornINSPECTED BOTH STARTER ADAPTERS AND FOUND THEM WORN BEYOND LIMITS PER SB MEB 94-4. THIS PART IS THE NEW IMPROVED STYLE ADAPTER AND DOES NOT REQUIRE ANY FURTHER INSPECTIONS.SDR 95ZZZX6146Adapter · wornINSPECTED BOTH STARTER ADAPTERS AND FOUND THEM WORN BEYOND LIMITS PER SB MEB 94-4. THIS PART IS THE NEW IMPROVED STYLE ADAPTER AND DOES NOT REQUIRE ANY FURTHER INSPECTIONS.SDR 95ZZZX6764Seal · leakingTHE GARLOCK SEAL OR LIPPED SEAL ON THE AIR CONDITIONER PULLEY SHAFT WHICH STICKS OUT THE AFT SIDE OF THE STARTER ADAPTER (THE SHAFT WITH THE CASTELATTED NUT AND COTTER PIN ON THE AFT FORWARD OF IT), WAS LEAKING OIL. HARD TO LOCATE LEAK AT THIS SEAL AS IT LOOK
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