JASC 8520
Service difficulty reports · 2,213
Reports filed under 8520 · Reciprocating Engine Power 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 = '8520' 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 = '8520' 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 2001FA0000189Lifter · brokenDURING TEAR DOWN FOR OVERHAUL A PIECE OF METAL WAS FOUND IN OIL SUMP. FURTHER INSPECTION FOUND THAT THE HEAD OF LIFTER BODY FOR NR 1 CYLINDER EXHAUST VALVE WAS HALF GONE. (PIECE IN OIL SUMP) FROM WEAR ON REMAINING PART, APPEARS THAT IT HAD BEEN THAT WAY FORSDR AUS20011134Crankshaft · cracked(AUS) CRANKSHAFT CRACKED. SUSPECT CAUSED BY UNREPORTED PROPELLER STRIKE. CAM DRIVE BOLTS SHEARED. NO EVIDENCE OF LOCKWIRING ON BOLTS.SDR 2001F00322Stud · brokenCYLINDER STUDS BROKE. CHANGED CYLINDER AND ALL STUDS ON THAT CYLINDER. (M)SDR 2003FA0001092Flange · crackedFOUND CRACKED CRANKSHAFT FLANGE. INSTALLED 3 BLADE MT PROP TO DECREASE STRESS ON CRANKSHAFT.(K)SDR CA010628026Bearing · failed(CAN) ON CLIMB OUT OF EVA LAKE ENGINE NOISE STARTED GETTING LOUDER AND WITHIN 10-15 SECONDS YOU COULD HEAR A METAL SCREECHING SOUND. FOLLOWED BY A LOUD TAPPING THEN A FINAL BIG BANG WHEN ROD BROKE, CABIN FILLED WITH SMOKE.SDR 2001FA0000107Crankshaft · brokenENGINE FAILED ON TAKE OFF. FACTORY REP. REPORTED BY PHONE THAT CRANKSHAFT HAD BROKEN.SDR SAE06012Camshaft · damagedTHIS ENGINE WAS RECEIVED FOR REPAIR OF METAL IN THE OIL FILTER. NO REFERENCE ON THE ORDER AS BEING RAM CONVERSION. THE ENGINE WAS RECEIVED WITHOUT THE EXHAUST AND TURBOCHARGER SYSTEMS. THESE ARE MAINLY AIRFRAME MOUNTED. THE RAM CONVERSION OF THIS ENGINE INSDR SAE06011Camshaft · damagedTHIS ENGINE WAS RECEIVED FOR REPAIR OF METAL IN THE OIL FILTER. ENGINE WAS RECEIVED WITHOUT THE EXHAUST AND TURBOCHARGER SYSTEMS, AS THESE ARE MAINLY AIRFRAME MOUNTED. THE EXCEPTION IS THAT THE RAM CONVERSION OF THIS ENGINE INCREASES BOTH THE MAXIMUM POWER OSDR AUS20010725Bolt · failed(AUS) CYLINDER HOLDDOWN BOLTS FAILED.SDR 2001F00021Nut · crackedDURING ANNUAL INSPECTION FOUND NUT CRACKED. NOTHING UNUSUAL NOTICED AS FAR AS INSTALLATION WAS CONCERNED. FOUND THAT NUT CRACKED IN THE CENTER OF THE V ON THE SMALLEST DIAMETER PART OF THE NUT. INSTALLED NEW NUT AND TORQUED TO SPECS. OTHER ENGINE CHECKED ASDR AUS20010636Master Rod · failed(AUS) RT ENGINE NR 5 CYLINDER MASTER ROD FAILED AT BASE. LOSS OF ENGINEOIL.SDR 2001FA0000262Crankcase · mismanufacturedTOOLING-MACHINE CHATTER LEFT ROUGH, UNFINISHED AREA FOR CYL BASE O-RING TO SEAT AGAINST ALL FOUR CASE CYLINDER HOLES.SDR AUS20010717Crankcase · faulty(AUS) CRANKCASE INCORRECTLY LINE BORED REDUCING DECK HEIGHT BY 1.016MM(0.040IN). THIS ALLOWED NO3 PISTON TO CONTACT THE CYLINDER HEAD.METAL CONTAMINATION OF ENGINE. PERSONNEL/MAINTENANCE ERROR.SDR CA010625044Connecting Rod · failed(CAN) ON TAKEOFF FROM YVG (VERMILION) THE PILOT NOTICED THE LH ENGINE STARTED TO RUN ROUGH AND LOSE POWER. THE ENGINE THEN STARTED TO VIBRATE BADLY AT WHICH POINT THE PILOT STOPPED AND FEATHERED THE # 1 ENGINE. THE AIRCRAFT RETURNED TO VERMILION WHERE MAINTENASDR 2001F00114Camshaft · chippedWHEN REMOVING NR 3 CYLINDER DUE TO LOW COMPRESSION, IT WAS NOTICED THAT THE LOBE ON THE CAMSHAFT FOR THE NR 3 INTAKE WAS CHIPPED. PEELING THE FACE OF THE INTAKE BODY WHICH RIDES ON THE LOBE REVEALED THAT IT ALSO WAS CHIPPED. BOTH OIL AND FILTER WERE CHANGED SDR 2001F00113Camshaft · chippedWHEN REMOVING NR 3 CYLINDER DUE TO LOW COMPRESSION, IT WAS NOTICED THAT THE LOBE ON THE CAMSHAFT FOR THE NR 3 INTAKE WAS CHIPPED. PEELING THE FACE OF THE INTAKE BODY WHICH RIDES ON THE LOBE REVEALED THAT IT ALSO WAS CHIPPED. BOTH OIL AND FILTER WERE CHANGED SDR GAJ2001F00000Thru Bolt · crackedNR 2 CYLINDER THRU STUD STARTED TO CRACK ALLOWING CYLINDER TO ROCK, ENGINE REMOVED FOR INSPECTION AND CHANGE.SDR 2003FA0001091Flange · crackedFOUND CRACKED CRANKSHAFT FLANGE. INSTALLED 3 BLADE PROP TO DECREASE STRESS ON CRANKSHAFT.SDR AUS20010633Stud · broken(AUS) LH ENGINE NO3 CYLINDER HOLDDOWN STUDS BROKEN. CYLINDER WAS HELD IN PLACE BY THE THROUGH BOLTS ONLY.SDR CA011003013Crankshaft · failed(CAN) INFLIGHT CATASTRPHIC FAILURE, CRANKSHAFT, AT LEAST 2 RODS, HOLE IN TOP OF CRANKCASE, CONTINUED FLIGHT ON, REAR ENGINE TO VIKING AIRPORT (ALBERTA).SDR AUS20010571Crankcase · misoverhauled(AUS) ENGINE CRANKCASE HALVES ASSEMBLED WITH A CONSIDERABLE AMOUNT OF SEALANT BETWEEN THE MATING FACES OF THE MAIN BEARING PEDESTALS. THIS RESULTED IN CRANKCASE FRETTING AND BEARING MOVEMENT. PERSONNEL/MAINTENANCE ERROR. INCORRECT ASSEMBLY.SDR 2001FA0000017Connecting Rod · failedNR 2 PISTON WAS REMOVED, CONNECTING ROD BUSHING WAS FOUND TO HAVE MOVED TO THE POSITION AS SHOWN IN PHOTO AND ONLY STOPPED BY CONTACTING THE INSIDE OF PISTON PIN BOSS OF THE PISTON. BUSHING SHOWED EVIDENCE OF MOVING TORSIONALLY FROM PROPER POSITION IN REF. TOSDR 2001FA0000155Gear · damagedDURING COMPLICANCE WITH AD 96-09-10 - COMPLIED ALSO WITH AD 91-14-22 CRANKSHAFT GEAR RETAINING BOLT. ORDERED NEW CRANKSHAFT GEARS PN SL13S19464 FOR LH AND RH ENGINES. WHEN INSTALLING NEW GEARS IT WAS DISCOVERED ONE HAD THE TIMING MARK ON THE CORRECT TOOTH ANDSDR 2001FA0000001Cam · mismanufacturedAFTER INSTALLING NEWLY OVERHAULED ENGINE ON AIRCRAFT, FOUND THAT THE -30 P.P.C. COULD NOT BE RIGGED. REMOVED P.O.C. AND FOUND THAT THE CAM INSIDE, ALTHOUGH MARKED CORRECTLY (P/N 897602-1), THE CAM WAS MANUFACTURED WRONG. IT HAS THE WRONG CAM PROFILE. REF: SSDR 2001FA0000002Cam · mismanufacturedAFTER INSTALLING NEWLY OVERHAULED ENGINE ON AIRCRAFT, FOUND THAT THE -30 P.P.C. COULD NOT BE RIGGED. REMOVED THE P.P.C. AND FOUND THAT THE CAM INSIDE, ALTHOUGH MARKED WITH THE CORRECT P/N (8976021) WAS MANUFACTURED WRONG. IT HAS THE WRONG CAM PROFILE. REF: SDR FWRA2001003Thru Bolt · fracturedAT CRUISE FLIGHT, THE NR 3 CYLINDER SEPARATED FROM THE ENGINE CASE, WHICH RESULTED IN AN INFLIGHT FIRE. THE ENGINE CASE, CYLINDER HOLD DOWN STUDS, THROUGH BOLT STUDS AND NR 3 CONNECTING ROD WERE SENT FOR LABORATORY INVESTIGATION. THE INVESTIGATION RESULTEDSDR 20010516CW001Stud · fracturedAT CRUISE FLIGHT, THE NR 3 CYLINDER SEPARATED FROM THE ENGINE CASE, WHICH RESULTED IN AN INFLIGHT FIRE. THE ENGINE CASE, CYLINDER HOLD DOWN STUDS THROUGH BOLT STUDS AND NR 3 CONNECTING ROD WERE SENT FOR LAB INVESTIGATION. INVESTIGATION RESULTS: THE PRIMARY SDR CA010622036Bolt · broken(CAN) UPON INSPECTION (EVENT 1 & 2), TAKING THE COWLING OFF ON LEFT ENGINE, A NUT WITH PART OF THE THRU BOLT HIT THE FLOOR, FURTHER INSPECTION FOUND THE LEFT THRU BOLT HAS SNAPPED.SDR 2001F00037Snap Ring · missing3-26-01 REMOVED NO. 1 AND 3 CYLINDERS TO COMPLY WITH CRANKSHAFT COUNTER WEIGHT AD. FACTORY TECH REP REMOVED AND INSPECTED COUNTER WEIGHT AMOUNTING FLANGES (4), REPLACED COUNTER WEIGHTS AND ASSOCIATED PARTS, AND CYLINDERS AND ASSOCIATED PARTS, 50 ENGINE HOURS SDR 20010511CW005Crankcase · crackedDURING ANNUAL INSPECTION, NOTICED OIL ON LEFT FORWARD SECTION OF ENGINE. REMOVED PROP GOVERNOR AND ENGINE BAFFLING. FOUND SMALL CRACK IN CRANKCASE, FORWARD OF NR 2 CYLINDER UPPER FORWARD HOLD DOWN NUT. CONDITION PROBABLY CAUSED BY AGE, ENGINE HAS NEVER BEESDR 20010607CW009Bolt · shearedRIGHT ENGINE WOULD NOT START. FORWARD DRIVE GEAR FOR STARTER ADAPTOR LOOSE IN ACCESSORY CASE. ALL 6 BOLTS SHEARED OFF CRANKSHAFT END.SDR AUS20010451Washer · failed(AUS) RH ENGINE COUNTERWEIGHT RETAINING WASHER PNO 71907 HAD FAILED ALLOWING THE COUNTERWEIGHT ROLLER PNO 72797 TO MIGRATE ANDCONTACT NO5 CYLINDER CONNECTING ROD AND CAUSING IT TO FAIL WHICHCAUSED SEVERE DAMAGE TO THE CRANKCASE. THE RETAINING CIRCLIPPNO LW148SDR AU010353Gear · failed(AUS) CRANKSHAFT DRIVE GEAR FAILED.SDR AU010364Connecting Rod · damaged(AUS) NR6 CONNECTING ROD RUBBING ON COUNTERWEIGHT. ROD WAS OUT OF ALIGNMENT WITH THE BIG END AND SMALL END AXIS. INSPECTION FOUND THAT THREE COUNTERWEIGHTS HAD MATERIAL GROUND FROM THE BOTTOM SURFACE. THE CRANKCASE WAS ALSO UNSERVICEABLE DUE TO THE BREAKUP OFSDR WVBA2001020Stud · leakingDURING INSPECTION EXCESSIVE OIL WAS OBSERVED IN BOTTOM OF COWLING OF RIGHT ENGINE. THE LEAK WAS TRACED TO THE TWO FORWARD HOLD DOWN STUDS OF NR 2 CYLINDER. NOTE THESE ARE NOT THRU STUDS. THE CYLINDER WAS REMOVED AND OIL OBSERVED LEAKING FROM AROUND THE THRSDR FWRA2001001Camshaft · damagedDURING DISASSEMBLY OF ENGINE DUE TO A CRACK IN CRANKCASE FOUND ONE CAMSHAFT LOBE GONE AND ONE TAPPET BODY DAMAGED.SDR 20010410AP021Connecting Rod · gougedFACTORY NEW ENGINE WITH 0 HRS TTIS WAS BEING DISASSEMBLED FOR CRANKSHAFT REPLACEMENT UNDER MSB 00-5. THE MAJORITY OF CONNECTING ROD BOLTS COULD NOT BE REMOVED WITH REASONABLE PRESSURE AND HAD TO BE DRIVEN OUT OF THE CAP. INSPECTION REVEALED THAT THE ROD BOLTSDR WVBA2001019Camshaft · damagedDURING INSPECTION, METAL CONTAMINATION WAS DISCOVERED IN THE OIL FILTER. A CHECK OF VALVELIFT WAS DONE AND IT WAS DISCOVERED THAT NR 3 AND NR 4 INTAKE LOBES WERE EXCESSIVE. NR 3 CLYINDER WAS REMOVED AND DAMAGE OBSERVED ON THE CAM LOBES AND TAPPET FOLLOWERS. SDR 20010423CW006Camshaft · wornCAMSHAFT WORN ON NR 5 LOBE. CYLINDERS NR 3 AND NR 4 INTAKE VALVE NOT OPENING FULLY. PILOT REPORTED ENGINE RUNNING ROUGH.SDR 20010420CW002Crankcase · crackedREMOVED COWLINGS TO CHANGE/SERVICE ENGINES WITH OIL. FOUND LEFT ENGINE CASE CRACKED ABOVE NR 6, NR 4, AND NR 1 TAPPET HOUSING. ALL THREE CRACKS APPEARED TO BE PUSHED FROM INSIDE OUT. NONE WERE LEAKING OIL YET AND HAD NOT BEEN PRESENT 20 HOURS EARLIER. WHENSDR AU010279Bolt · broken(AUS) LT ENGINE CONNECTING ROD BOLT FAILED. ENGINE SUMP HOLED.SDR CA010426025Lifter · worn(CAN) PILOT REPORTED VIBRATION ON LT & RT ENGINE ON RUN-UP. INSPECTED BOTH ENGINES, FOUND GOOD COMPRESSION, NO BROKEN ENGINE MOUNT (COMMON ON THIS AIRCRAFT). REMOVED LIFTERS FOUND BADLY DAMAGED, DAMAGE ON CAMSHAFT AS WELL. FRONT SURFACE MISSING PIECES ON LIFTESDR 20010420CW009Bearing · damagedAT 25 HOUR OIL CHANGE, FOUND METAL PARTICLES IN SUCTION SCREEN AND FILTER. ON INSPECTION, FOUND NR 2 MAIN BEARING HAD SPUN NEARLY CAUSING ENGINE FAILURE. CHECK SCREENS.SDR CA010406010Crankcase · cracked(CAN) DURING ROUTINE 50 HR INSP, BROKEN CYLINDER HOLD DOWN STUD FOUND SITTING IN BOTTOM OF ENGINE COWLING. LATER INVEST., BROKEN STUDS ORIG LOCATION LOCATED ON FRONT INNER CYLINDER OF RT ENGINE. UPON CONSULTATION WITH AERO RECIP ENGINES OF WINNIPEG, MANBITOBA,SDR AU010184Pushrod · misinstalled(AUS) ENGINE PUSHRODS AND TAPPETS INCORRECTLY FITTED DURING ASSEMBLY FOLLOWING A BULK STRIP FOLLOWING A PROPELLER STRIKE. METAL CONTAMINATION OF ENGINE.SDR AU010182Crankshaft · corroded(AUS) CRANKSHAFT INTERNAL BORE CORRODED. FOUND DURING INSPECTION IAWAD/LYC/102 AMDT2 PART 1 AND PART 2.SDR 20010413CW004Dowel Pin · misinstalledDURING ENGINE INSPECTION, IT WAS NOTED THAT THE NUMBER ONE MAIN BEARING DOWEL WAS INSTALLED BACKWARDS WITH IN THE CRANKCASE BEARING DOWEL BORE. THE IMPROPERLY INSTALLED DOWEL PREVENTED THE NEW BEARING FROM FULLY SEATING WITHIN THE CRANKCASE BORE.SDR AU010246Connecting Rod · separated(AUS) RT ENGINE NR 2 AND NR 4 CONNECTING ROD BIG ENDS FAILED. CRANKCASE HOLES AND MAGNETOS SEPARATED.SDR WVBA2001016Camshaft · damagedDURING INSPECTION METAL CONTAMINATION WAS DISCOVERED IN THE OIL FILTER. A CHECK OF VALVELIFT WAS DONE AND IT WAS DISCOVERED THAT NR1 AND NR2 INTAKE LOBES WERE EXCESSIVE. NR1 CYLINDER WAS REMOVED AND DAMAGE OBSERVED ON THE CAM LOBES AND TAPPET FOLLOWERS. NOSDR WVBA2001014Camshaft · damagedDURING INSPECTION METAL CONTAMINATION WAS DISCOVERED IN THE OIL FILTER. A CHECK OF VALVELIFT WAS DONE AND IT WAS DISCOVERED THAT NR1 AND NR2 INTAKE LOBES WERE EXCESSIVE. NR1 CYLINDER WAS REMOVED AND DAMAGE OBSERVED ON THE CAM LOBES AND TAPPET FOLLOWERS. NOT
Back to JASC 8520