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 20001106SH083Bushing · damagedENGINE DISASSEMBLED FOR INSPECTION AFTER ROTOR STRIKE AT 400.2 HOURS, TOTAL TIME SINCE NEW. INSPECTION OF COUNTERWEIGHT BLADE BUSHING ID (PN 73810) REVEALED TWO BUSHINGS WITH ID .0008 INCH AND .0011 INCH OUT-OF-ROUND AS INSTALLED, WERE BEYOND .0007 INCH LIMITSDR 20001106SH082Crankshaft · making metalENGINE WAS DISASSEMBLED FOR INSPECTION AFTER ROTOR STRIKE AT 18.2 HOURS, TOTAL TIME SINCE NEW. LOOSE CHIPS WERE FOUND AT ENDS OF 68484 OIL TUBE INSTALLED IN FRONT MAIN OF CRANKSHAFT.SDR 20001108SH021Camshaft · failedSTEEL WAS FOUND IN BOTH SPIN-ON FILTER AND OIL SUCTION SCREENS. CAMSHAFT SUSPECTED FAILING, AND PROVEN WITH VISUAL INSPECTION AND CHECKING THE LIFT OF ALL OF THE LOBES. NR 1 AND NR 2 LOBES WERE ONLY GIVING HALF THE LIFT FROM THE OTHER LOBES. (X)SDR 20001031SH005Cylinder · dislodgedNR 2 CYLINDER DISLODGED FROM CRANKCASE. ROD CAP FROM NR 2 ROD CAME OFF ROD BOLT, PN SL74644, AT LEAST ONE WAS FOUND BROKEN. THE OTHER BOLT WAS NOT FOUND. (X)SDR CA001229004Bearing · failed(CAN) DURING 100 HOUR INSPECTION, 2 LARGE (1/4 X 3/18) PIECES WERE FOUND IN THE ENGINE SUMP. ONE CYLINDER WAS REMOVED AND A PIECE OF THE CONNECTING ROD BEARING WAS FOUND MISSING. THE ENGINE WAS REPLACED.SDR 20001016SH024Camshaft · damagedDURING INSPECTION, LOW CYLINDER COMPRESSION WAS DETECTED DURING THE COMPRESSION CHECK. THE CYLINDER WAS REMOVED AND A VISUAL INSPECTION PEFORMED ON THE CAMSHAFT. DETERMINED BOTH NR 3 AND NR 4 INTAKE LOBES AND TAPPET FACES WERE DAMAGED. SUBMITTER STATED THISSDR AU000926Seal · faulty(AUS) CRANKSHAFT SEAL INNER LIP DAMAGED. SEAL WAS A NEW ITEM RECEIVED FROM SUPPLIER. (X)SDR 20001013SH009Connecting Rod · flakingDURING ROUTINE OIL CHANGE, FOUND ABUNDANT METAL PARTICLES IN OIL FILTER AND FINGER SCREEN. AFTER CONFERRING WITH LYCOMING, ALL CYLINDERS WERE PULLED TO CHECK PILOTED PISTON PIN PLUGS, NO ABNORMAL WEAR WAS NOTED. SENT OIL FILTER AND FINGER SCREEN METAL TO LYCSDR CA001019009Stud · broken(CAN) THIS INCIDENT OCCURRED 30 MI EAST OF ATIKOKAN. CREW CONTINUED FLIGHT UNITL REACHING THE ATIKOKAN AIRPORT. FAILURE OF NR 2 CYLINDER EXHAUST ROCKER CAM STUD. THE CONDITION OF THE BROKEN STUD AND NUT WOULD INDICATE THAT THE NUT WAS INSTALLED IN A CROSS THRESDR CA001102008Rod · broken(CAN) THECOONECTING ROD BROKE DURING FLIGHT. DAMAGES INSIDE THE CASE WERE CAUSED BY THE BROKEN PIECES. (X)SDR AU000954Pin · faulty(AUS) MASTER ROD LINK PINS (8OFF) ELECTROPLATED USING AN UNAPPROVED PROCESS. NO EVIDENCE OF UNSERVICEABILITY FOUND. UNAPPROVED PART. (X)SDR AU000953Pin · faulty(AUS) MASTER ROD LINK PINS (8OFF) ELECTROPLATED USING AN UNAPPROVED PROCESS. NO EVIDENCE OF UNSERVICEABILITY FOUND. UNAPPROVED PART. (X)SDR AU001168Connecting Rod · failed(AUS) NR 1 CYLINDER CONNECTING ROD LITTLE END FAILED RESULTING IN CATASTROPHIC ENGINE FAILURE. INVESTIGATION FOUND THAT THE LITTLE END BUSH WAS CRACKED CAUSING THE FAILURE. SUSPECT CRACKING CAUSED BY ENGINE OVERSPEED.SDR AU000757Crankcase · cracked(AUS) ENGINE CRANKCASE CRACKED IN AREA ADJACENT TO NR 2 CYLINDER TOP FORWARD BASE STUD. FOLLOWING ENGINE BULK STRIP, THE FOLLOWING DEFECTS WERE ALSO NOTED: CRANKCASES BADLY FRETTED ON MATING FACES . INTERMEDIATE MAIN BEARINGS LOOSE IN MAIN TUNNEL CAUSING WSDR AU000740Nut · loose(AUS) LEFT AND RIGHT ENGINE CYLINDER HOLD-DOWN NUTS LOOSE. SUBMITTER SUSPECTED CAUSED BY INCORRECT ASSEMBLY. ENGINES HAD COMPLETED 210.5 HOURS SINCE BULKSTRIP. (X)SDR AU000717Seal · leaking(AUS) LH AND RH ENGINE CRANKSHAFT SEALS ADRIFT AND LEAKING OIL.SDR AU000714Seal · loose(AUS) RIGHT ENGINE CRANKSHAFT SEAL ADRIFT. (X)SDR AU000698Stud · failed(AUS) LEFT ENGINE NR 2 CYLINDER HOLD-DOWN STUDS (4OFF) FAILED. BROKEN STUDS FOUND IN ENGINE COWL. (X)SDR AU000675Crankshaft · broken(AUS) RIGHT ENGINE CRANKSHAFT BROKEN. (X)SDR AU000624Stud · wrong part(AUS) BOTH PROPELLERS COULD NOT BE FITTED CORRECTLY DURING INSTALLATION TO RECENTLY OVERHAULED ENGINES. SUBSEQUENT INVESTIGATION FOUND THE ATTACHING STUDS WERE TOO LONG (-4 STUDS HAD BEEN FITTED INLIEU OF -3 STUDS). (X)SDR AU000892Crankcase · cracked(AUS) RT ENGINE CRANKCASE CRACKED IN THE AREA OF NR 1 CYLINDER UPPER FORWARD STUD. NR 1 CYLINDER FORWARD LOWER BASE STUD PN 646140-1 SHEARED. THE CRACK WAS FOUND APPROXIMATELY 60 HOURS PREVIOUSLY DURING ROUTINE MAINTENANCE, BUT WAS WITHIN LIMITS (LESS THAN 5SDR AU000756Gear · cracked(AUS) CAMSHAFT GEAR P/N 631845 CRACKED. FUEL PUMP DRIVE GEAR P/N 535662 CRACKED AND TEETH BADLY WORN. FUEL CONTROL UNIT P/N 629703-2 HAD O-RING SEAL MISSING FROM MIXTURE SHAFT. SUBMITTER SUSPECTED CAUSED BY INCORRECT MESHING OF FUEL PUMP DRIVE GEAR P/N 535SDR 2002FA0000131Pushrod · crackedON ANNUAL INSPECTION OF THE LEFT ENGINE THREE PUSHRODS WERE NOTED TO BE CRACKED ALONG WHAT LOOKS LIKE THEIR ENTIRE LENGTHS. THE THREE DEFECTIVE PUSHRODS WERE REPLACED WITH NEW ONES, AND THE REMAINDER OF THE PUSHRODS WERE OVERHAULED FOR BOTH ENGINES. CAUSE OF TSDR 20001017SH024Rod Bolt · brokenNR 3 CONNECTING ROD BOLT PN SL-75060 BROKE CAUSING THE CONNECTING ROD CAP TO SEPARATE RESULTING IN COMPLETE ENGINE FAILURE. AIRCRAFT LANDED WITHOUT INCIDENT. (X)SDR CA000928037Crankcase · failed(CAN) NR 2 MAIN BEARING HAD STARTED TO SPIN IN CRANKCASE CAUSING ALUMINUM IN FILTER. CRANKCASE SENT OUT FOR REPAIR. ENGINE ASSEMBLED WITH NEW CRANKCASE. (X)SDR 20000925SH024Stud · brokenLYC WORK ORDER NR LB 1027207 FACTORY ZERO TIME ASSEMBLED 11-10-92 INSTALLED 12-28-92 IAW PEN YAN STC. 18 HOURS SINCE LAST ANNUAL. FOUND NR 1 CYLINDER TOP RIGHT .50 INCH THROUGH STUD BROKEN FLUSH WITH CASE. ALL OTHER STUDS ON NR 1 OK. RESEARCH SEEMS TO INDSDR AU000893Stud · sheared(AUS) LEFT ENGINE NR 2 CYLINDER HOLD-DOWN STUDS SHEARED. THE TWO THROUGH-BOLTS WERE INTACT. (X)SDR AU000955Camshaft · spalled(AUS) CAMSHAFT LOBES AND ASSOCIATED LIFTERS SPALLED, PITTED, AND WORN. (X)SDR 20000912SH009Crankshaft · failedENGINE FAILED AFTER TAKEOFF RESULTING IN FORCED LANDING. INSPECTION OF ENGINE REVEALED CRANKSHAFT FAILED BETWEEN THE NR 2 AND NR 3 JOURNALS. (X)SDR 20000825SH002Crankshaft · failedENGINE FAILED AFTER TAKEOFF RESULTING IN FORCED LANDING. INSPECTION OF ENGINE REVEALED CRANKSHAFT FAILED BETWEEN THE NR 2 AND NR 3 JOURNALS.SDR AU000946Stud · sheared(AUS) NR 4 CYLINDER MOUNT STUDS (3OFF) SHEARED. (X)SDR 20000817SH022Camshaft · failedFERROUS MATERIAL FOUND IN OIL FILTER. ENGINE DISASSEMBLED, PROBLEM FOUND TO BE FAILED CAM AND LIFTER BODIES. (X)SDR 20000817SH017Camshaft · making metalFERROUS MATERIAL FOUND IN OIL FILTER. ENGINE DIS-ASSEMBLED, PROBLEM FOUND TO BE FAILED CHAMSHAFT AND LIFTER BODIES. (X)SDR 20000817SH016Camshaft · making metalFERROUS MATERIAL FOUND IN OIL FILTER. ENGINE DIS-ASSEMBLED, PROBLEM FOUND TO BE FAILED CAMSHAFT AND LIFTER BODIES. (X)SDR CA000906008Engine · failed(CAN) PILOT REPORTED DURING CRUISE HE HAD BRIEF VIBRATION FOLLOWED BY A LOSS OF OIL PRESSURE AND IMMEDIATE ENGINE FAILURE. AN UNEVENTFUL FORCED LANDING WAS CONDUCTED ON A LAKE 40 NAUTICAL MILES NORTHWEST OF RANKIN INLET, NUNAVUT. MAINTENANCE FOUND THE FRONT SDR 20000911SH044Baffle · misalignedENGINE OIL QUICK DRAIN WOULD NOT SHUT OFF DUE TO ONE SHEARED OFF RIVET HEAD, MS 20470-4, BLOCKING HOLE IN DRAIN VALVE. REF LYC SB 489A. OIL SUMP BAFFLE ASSY HAD THE VERTICAL DEFLECTOR FLANGE MISALIGNED TO BAFFLE PLATE AND THE TENSION LOAD POPPED THE RIVET HESDR 20000831SH018Bearing · making metalFOUND METAL IN OIL FILTER AND SCREEN. FOUND FORWARD THRUST BEARING HALVES OUTER COATING ON THE INSIDE HALVES FLAKING OFF. (FLAKES AND CHUNKS). PART NUMBER ON BOTH HALVES IS LW-13885-M06 1-97. (X)SDR CA000925007Bearing · failed(CAN) ON TAKEOFF ENGINE AUTO-FEATHERED, AND LOAD OF RETARDANT WAS JETTISONED. AIRCRAFT RETURNEDTO AIRPORT WITH THREE ENGINES OPERATIVE. INSPECTIONS COMPLETED - I.E. NOSE CASE REMOVED AND CHIPPED TEETH FOUND ON COUNTER BALANCE DRIVE GEARS AND THE SUPPORT BEARISDR CA000920015Bolt · sheared(CAN) THE NR 3 CYLINDER CONNECTING ROD BOLT FAILED DUE TO FATIGUE, OR DEFECTIVE MATERIAL.SDR CA000928036Lifter · chipped(CAN) A LARGE AMOUNT OF ALUMINUM WAS FOUND IN THE OIL SCREEN. A CYLINDER DIFFERENTIAL COMPRESSION CHECK WAS PERFORMED AND FOUND TO BE ALL ABOVE 70/80. STARTER DRIVE WAS REMOVED AND INSPECTED, NO DAMAGE FOUND AT THIS TIME (SUSPECTED USING ONLY A BORESCOPE). SDR AU000839Pin · faulty(AUS) NO7 LINK PIN DISPLACED. (X)SDR AU000748Link Rod · seized(AUS) ENGINE FAILED. INVESTIGATION FOUND THAT THE NR 7 LINK ROD SEIZED IN THE NR 7 LINK PIN. (X)SDR 20000831SH017Cam · strippedENGINE FAILURE CAUSED BY TEETH BEING STRIPPED OFF OF CAMGEAR. ONE TOOTH APPEARS TO HAVE BEEN FRACTURED AND THE FOLLOWING 6 TEETH WERE STRIPPED. GEAR WAS STILL PROPERLY FASTENED TO CAMSHAFT. THE CRANKSHAFT GEAR WAS NOT DAMAGED. NO FOREIGN MATERIALS WERE FOSDR 20000828SH020Shroud · crackedPUSHROD SHROUD CRACKED AT INSIDE OF SPRING RETAINING CRIMP, AND ALLOWED THE OIL TO LEAVE ENGINE CAUSING ENGINE TO SEIZE. (X)SDR 20000803SH008Crankshaft · mismanufacturedSLUGGISH PROPELLER, MOVING TO LOW PITCH IN-FLIGHT. UPON INVESTIGATION, THE OIL TRANSFER HOLE IN THE FRONT MAIN BEARING AREA OF THE CRANKSHAFT WAS MISPOSITIONED DURING MANUFACTURE, AND DRILLED N THE WRONG LOCATION. THE ENGINE WAS DISASSEMBLED, AND A NEW CRANKSDR 20000731SH012Crankshaft · crackedCRANKSHAFT CRACKED AND FAILED JUST AFT OF FLANGE AND PROPELLER SEPARATED FROM AIRCRAFT WHILE IN-FLIGHT. (X)SDR AU000580Crankcase · cracked(AUS) ENGINE CRANKCASE CRACKED ADJACENT TO UPPER SPLIT LINE. FURTHER INVESTIGATION FOUND THE CAMSHAFT FORWARD JOURNAL CRACKED THROUGH THE OIL FEED HOLE TO THE JOURNAL APPEARED BLOCKED. SUBMITTER SUSPECTED HOLE HAD BEEN WELDED CLOSED.SDR CA030709003Stud · leaking(CAN) ENGINE REMOVED TO INSTALL NEW CAM. WHEN THE ENGINE WAS REPAIRED, IT LEAKED OIL FROM THROUGH STUD. ENGINE WAS REMOVED. NEW TYPE STUDS INSTALLED. IT SOLVED THE PROBLEM. TTAC 4603SDR CA000811004Crankshaft · separated(CAN) AIRCRAFT WAS IN A CRUISE ATTITUDE, IN PREPARATION TO DISEMBARK SKYDIVERS, WHEN PILOT NOTICED AN ENGINE VIBRATION FOLLOWED BY A BANG, ENGINE CAME TO A SUDDEN STOP. AIRCRAFT LANDED AT AIRPORT OF DEPARTURE WITHOUT FURTHER INCIDENT. UPON INSPECTION, FOUNSDR 20000809SH030Sump · crackedFOUND THE SUMP CRACKED, CENTER FORWARD SECTION. CRACK OVERALL LENGTH, 2.75 INCHES. TWO SHORT SPUR CRACKS CAME OFF THE MAIN CRACK. (X)
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