JASC 8520
Service difficulty reports · 2,214
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 98ZZZX1548Crankcase · crackedDISCOVERED 5.50 INCH LONG CRACK ON CRANKCASE BELOW NR 2 CYLINDER FLANGE. CRACK WAS APPROXIMATELY 1 INCH BELOW BOTTOM FLANGE OF CYLINDER AND FOLLOWED ENTIRE BOTTOM CIRCUMFERENCE OF CYLINDER. CRACK WAS DISCOVERED AFTER PILOT REPORT OF A LARGE OIL LEAK FROM FORSDR AU980961Camshaft · stripped(AUS) CAMSHAFT CSU DRIVE GEAR TOOTH FAILED. METAL CONTAMINATION OF OIL SYSTEM.SDR 98ZZZX2166Rod Bolt · failedROD BOLT WAS MAGNAFLUXED AND CLEANED 75.8 HOURS PRIOR TO FAILURE. TT UNKNOWN, SUSPECT UNDETECTED METAL FATIGUE. BOLT BROKE UNDER FULL POWER AND HIGH RPM. SUGGEST CHANGING OUT ROD BOLTS WITH NEW BOLTS AT EACH MAJOR OVERHAUL.SDR AU980394Crankcase · defective(AUS) ENGINE CRANKCASE TUNNEL MEASUREMENTS OUT OF LIMITS.SDR AU980308Crankcase · faulty(AUS) CRANKCASE TUNNELS OUT OF LIMITS.SDR 98ZZZX1520Stud · failed108.9 HOURS SINCE OVERHAUL: PILOT REPORTED ROUGH RUNNING NR 4 CYLINDER ALL STUDS BROKEN, FUEL INJECTOR LINE AND EXHAUST PIPE BROKEN, AND CASE CRACKED. THIS ENGINE IS BEING REMOVED FOR REPAIR. .3750 INCH STUDS, P/N 38-13. .50 INCH STUDS, P/N 50-15 THROUGH SSDR CA980819003Crankshaft · pitting(CAN) PITTING CORROSION FOUND DURING INSPECTION IN ACCORDANCE WITH AD 98-02-08. LIQUID PENETRANT INSPECTION CARRIED OUT. NO CRACKS EVIDENT. CRANKSHAFT IS ON 100 HOUR RE-INSPECTION CYCLE.SDR 99ZZZX705Crankcase · crackedENGINE CASE HAD A CATASTROPHIC FAILURE AROUND NR 4 CYLINDER IN-FLIGHT. POSSIBLE CAUSE - CASE FATIGUE.SDR CA980909003Lifters · spalled(CAN) NEW VALVE LIFTERS INSTALLED DUE TO SPALLING.SDR CA980330003Crankcase · cracked(CAN) DURING ROUTINE INSPECTION ALUMINUM FLAKES WERE FOUND IN THE OIL SCREEN. THERE WAS ALSO SEVERAL PIECES OF ALUMINUM IN THE OIL FILTER CAP AND IN THE SUMP PLUGS. REMOVAL OF THE NR 1 CYLINDER, TO FACILITATE THE INVESTIGATION, REVEALED THE MAIN CRANKCASE REARSDR CA980325026Bearing · misaligned(CAN) METAL CONTAMINATION WAS PRESENT DURING THE ENGINE INSPECTION. NR 3 CYLINDER WAS REMOVED DUE TO LOW COMPRESSION. FURTHER INSPECTION FOUND THE NR 2 MAIN CRANKSHAFT BEARING OUT OF PLACE. THE ENGINE WAS REMOVED FROM SERVICE.SDR CA980325025Exhaust Valve · worn(CAN) ENGINE RECEIVED FOR CRANKCASE REPAIR. ON DISASSEMBLY THE TIP OF THE EXHAUST VALVE STEMS, ON 2 CYLINDERS, WERE FOUND TO BELOW THE VALVE KEEPERS. THE VALVE KEEPERS WERE FOUND DAMAGED AND THE EXHAUST ROCKER ARMS WERE FOUND SEVERELY WORN. AS THE CYLINDERS WESDR CA980318035Camshaft · worn(CAN) DURING A SCHEDULED 50 HOUR INSPECTION THAT CONTAINED TASKS REQUIRED TO COMPLY WITH THE ON CONDITION PROGRAM ESTABLISHED FOR THE ENGINE, A MODERATE AMOUNT OF VERY SMALL METAL PARTICLES WERE FOUND IN THE OIL FILTER ELEMENT. SUBSEQUENT INSPECTION OF THE OILSDR CA980331026Tappet Body · spalled(CAN) DURING A SCHEDULED 50 HR INSP THAT CONTAINED TASKS REQUIRED TO C\W THE ON CONDITION PROGRAM ESTABILSHED FOR THE ENGINE. A MODERATE AMT OF SMALL METAL PARTICLES FOUND IN OIL FILTER ELEMENT. SUBSEQUENT INSP OF THE OIL SYSTEM SUCTION STRAINER REVEALED ASDR AU980232Crankcase Stud · cracked(AUS) CRANKCASE CRACKED AT NR 5 CYLINDER MOUNTING PAD. BOTTOM TWO MOUNT STUDS BROKEN.SDR 98ZZZX1519Stud · failed95.3 HOURS SINCE OVERHAUL: PILOT REPORTED ROUGH RUNNING ENGINE. INSPECTION SHOWED NR 1 CYLINDER, 2 EACH, TOP CYLINDER STUDS AND, 2 EACH, AFT STUDS BROKEN. FUEL INJECTOR LINE BROKEN, INTAKE TUBE DAMAGED. .3750 INCH STUDS, P/N 38-13. .50 INCH STUDS, P/N 50-1SDR 98ZZZX1109Stud · failedDURING 100-HOUR INSPECTION, NR 2 CYLINDER BASE STUD FOUND BROKEN. SUBMITTER SUGGESTED POSSIBLY CAUSED BY ENGINE TOTAL TIME.SDR 98ZZZX1335Thru Bolt · failedDURING 100-HOUR INSPECTION, FOUND THE NR 6 CYLINDER TOP FORWARD STUD/THRU-BOLT BROKEN AT THE CYLINDER BASE. TCM TECH REP SAYS THAT THERE HAS BEEN A PROBLEM WITH THRU-BOLTS BREAKING EVEN BEFORE THEY LEAVE THE FACTORY. HYDROGEN EMBRITTLEMENT IS THE CAUSE. SUBSDR AU980259Stud · failed(AUS) NR 5 CYLINDER HOLD DOWN STUDS FAILED.SDR AU980488Crankcase · cracked(AUS) AT ENGINE BULK STRIP, FOLLOWING THE SEPARATION OF NR 2 CYLINDER HEAD (REFER MDR 98/0488), A 127 MM (5 INCH) LONG CRACK WAS FOUND IN THE CRANKCASE RUNNING FROM THE MATING FACE BACKBONE FLANGE DOWN TO THE NR 2 CYLINDER PAD. THE CRACK WAS OBSCURED BY THE LSDR 98ZZZX1553Bolt · failedSHORTLY AFTER TAKEOFF, PILOT FELT MINOR SHAKE IN LT ENGINE. A VISUAL INSPECTION (IN-FLIGHT) REVEALED SMALL AMOUNT OF OIL STREAMING BACK. PILOT RETURNED TO AIRPORT. MAINTENANCE PERSONNEL NOTED NR 6 INTAKE ROCKER BOX HAD A HOLE FROM THE INSIDE OUT. REPLACED SDR AU980217Tappet · failed(AUS) LT ENGINE CRANKCASE HOLED IN AREA ADJACENT TO NR 4 CYLINDER INLET CAM FOLLOWER. CAM FOLLOWER HEAD MISSING. NR 3 CYLINDER CAM FOLLOWER ALSO DAMAGED.SDR 98ZZZX1456Bolt · brokeTHRU-BOLT BROKE AFTER 14 HOURS. ENGINE NEVER RAN BEFORE BOLT BROKE.SDR CA980318019Crankshaft · broken(CAN) ENGINE FAILED IN CRUISE AND LANDED. POST FLIGHT INSPECTION FOUND THE CRANKSHAFT BROKEN IN THREE PLACES. ENGINE SENT TO R&O FOR INVESTIGATION.SDR AU980255Stud · sheared(AUS) CRANKCASE LOWER THOUGH BOLT LOCATED BETWEEN NR 4 AND NR 5 CYLINDERS SHEARED OFF AT THE THREAD.SDR 98ZZZX4469Crankcase · crackedDURING A ROUTINE OIL CHANGE, A CRACK WAS FOUND IN THE CRANKCASE THAT RADIATES ABOUT ONE INCH TOWARDS THE CENTER OF THE ENGINE STARTING FROM THE FORWARD UPPER HOLD DOWN STUD ON THE NR 5 CYLINDER. THE ENGINE WAS RETURNED TO THE FACTORY FOR A CRANKCASE REPLACEMESDR CA980302006Bolt · broken(CAN) PILOT REPORTED AN OIL LEAK ON THE NR 1 ENGINE. ENGINE WASHED DOWN AND OIL LEAK WAS SEEN IN THE AREA OF NR 2 CYLINDER. FURTHER INSPECTION FOUND A THRU BOLT WAS FRACTURED. THE THRU BOLT WAS REPLACED AND THEAIRCRAFT RETURNED TO SERVICE.SDR AU980155Crankshaft · cracked(AUS) ENGINE CRANKSHAFT NO2 MAIN BEARING JOURNAL CRACKED. CRANKCASE NO2 MAIN BEARING SADDLES DAMAGED. CAMSHAFT GEAR TEETH CRACKED. OIL TRANSFER COLLAR BADLY DAMAGEDSDR 98ZZZX1012Rod Bearing · failedLEFT ENGINE SPUN NR 6 CYLINDER ROD BEARING ON TRIP BACK FROM NASSAU. ENGINE WAS OVERHAULED BY T.W. SMITH ENGINE. THE ENGINE HAD 1,313.9 HOURS SINCE OVERHAUL.SDR 98ZZZX931Crankshaft · crackedPART WAS REMOVED FROM INVENTORY FOLLOWING ADVISORY THAT CRANKSHAFTS PROCESSED BY AIR AGENCY MAY BE DEFECTIVE. CRANKSHAFT WAS MPI AND FOUND TO HAVE CRACKS IN THE JOURNAL RADII.SDR 98ZZZX930Crankshaft · crackedCRANKSHAFT WAS REMOVED FROM INVENTORY FOR PRECAUTIONARY MPI. CRANKSHAFT WAS PROCESSED BY AIR AGENCY AND WAS FOUND CRACKED AT THE JOURNAL RADII.SDR 98ZZZX928Crankshaft · brokeCRANKSHAFT BROKE AT THE COUNTERWEIGHT JOURNAL AREA IN-FLIGHT. PART WAS SERVICED BY AIR AGENCY PRIOR TO INSTALLATION DURING OVERHAUL. PART WILL BE SENT TO CONTINENTAL FOR EVALUATION.SDR 98ZZZX927Crankshaft · crackedPART WAS REMOVED FROM INVENTORY FOR MPI FOLLOWING ADVISORY THAT AIR AGENCY MAY HAVE IMPROPERLY MACHINED CRANKSHAFT. PART WAS FOUND TO HAVE CRACKS IN THE JOURNAL RADII. PART IS NOT SERVICEABLE.SDR 98ZZZX926Crankshaft · crackedPART REMOVED FROM INVENTORY FOR PRECAUTIONARY MPI. CRANKSHAFT WAS GROUND AND POLISHED BY AIR AGENCY AND FOUND TO HAVE CRACKS IN THE JOURNAL RADII.SDR 98ZZZX925Crankshaft · crackedPART REMOVED FROM STOCK FOR PRECAUTIONARY MPI. UNIT WAS GROUND AND POLISHED BY AIR AGENCY AND FOUND TO HAVE CRACKS IN THE JOURNAL RADII.SDR 98ZZZX924Crankshaft · crackedPART REMOVED FROM INVENTORY AND PRECAUTIONARY MPI PERFORMED. CRACKS IN JOURNAL RADII WERE APPARENT. THIS UNIT WAS PREVIOUSLY GROUND AND POLISHED BY AIR AGENCY. PART IS SCRAP.SDR 98ZZZX923Crankshaft · crackedPART REMOVED FOR MPI, AS A PRECAUTION. THIS CRANKSHAFT WAS RE-WORKED BY AIR AGENCY AND WAS FOUND TO HAVE CRACKS IN THE JOURNAL RADII.SDR 98ZZZX916Crankshaft · crackedCRANKSHAFT WAS FOUND CRACKED AFTER PRECAUTIONARY REMOVAL FOLLOWING RECENT ENGINE OVERHAUL (8.8 HRS). CRANKSHAFT WAS PROCESSED BY REPAIR AGENCY PRIOR TO INSTALLATION. SUBMITTER SUGGGESTED PART MAY HAVE BEEN IMPROPERLY MACHINED. CRACK WAS AT NR 5 JOURNAL RADISDR 98ZZZX776Crankshaft · crackedCRANKSHAFT WAS FOUND CRACKED AFTER PRECAUTIONARY REMOVAL FOLLOWING RECENT ENGINE OVERHALL (8.8 HRS). CRANKSHAFT WAS PROCESSED BY REPAIR AGENCY PRIOR TO INSTALLATION. SUSPECT PART MAY HAV BEEN IMPROPERLY MACHINED. CRACK WAS AT NR 5 JOURNAL RADIUS APPROX 2.50SDR 98ZZZX775Crankshaft · crackedPART WAS REMOVED FOR MPI AS A PRECAUTION. THIS CRANKSHAFT WAS RE-WORKED BY AIR AGENCY AND WAS FOUND TO HAVE CRACKS IN THE JOURNAL RADII.SDR 98ZZZX774Crankshaft · crackedCRANKSHAFT WAS REMOVED FROM INVENTORY FOR MPI FOLLOWING ADVISORY THAT IMPROPER MACHINE WORK WAS PERFORMED BY AIR AGENCY. SHAFT WAS FOUND TO HAVE CRACKS AT THE JOURNAL RADIUS. THIS CRANKSHAFT WAS RE-WORKED BY FAA - AIR AGENCY AND IS SCRAP.SDR 98ZZZX771Crankshaft · crackedPART WAS REMOVED FROM INVENTORY AND PRECAUTIONARY MPI PERFORMED. CRACKS IN JOURNAL RADII WERE APPARENT. THIS UNIT WAS PREVIOUSLY GROUND AND POLLISHED BY AIR AGENCY. PART IS SCRAP.SDR 98ZZZX770Crankshaft · crackedPART WS REMOVED FROM STOCK FOR PRECAUTIONARY MPI. UNIT WAS GROUND AND POLISHED BY AIR AGENCY AND FOUND TO HAVE CRACKS IN THE JOURNAL RADII.SDR 98ZZZX769Crankshaft · crackedPART WAS REMOVED FROM INVENTORY FOR PRECAUTIONARY MPI. CRANKSHAFT WAS GROUND AND POLISHED BY AIR AGENCY AND WAS FOUND TO HAVE CRACKS IN THE JOURNAL AREAS.SDR 98ZZZX768Crankshaft · crackedPART WAS REMOVED FROM INVENTORY FOLLOWING ADVISORY THAT CRANKSHAFTS PROCESSED BY AIR AGENCY MAY BE DEFECTIVE. CRANKSHAFT WAS MPI AND FOUND TO HAVE CRACKS IN THE JOURNAL RADII.SDR 98ZZZX767Crankshaft · crackedPART WAS REMOVED FROM INVENTORY FOR MPI FOLLOWING ADVISORY THAT AIR AGENCY MAY HAVE IMPROPERLY MACHINED CRANKSHAFT. PART WAS FOUND TO HAVE CRACKS IN THE HOURNAL RADII. PART IS NOT SERVICEABLE.SDR 98ZZZX766Crankshaft · crackedCRANKSHAFT WAS REMOVED FROM INVENTORY FOR PRECAUTIONARY MPI. RANK WAS PROCESSED BY AIR AGENCY AND WAS FOUND CRACKED AT THE JOURNAL RADII.SDR 98ZZZX671Bearing · wrong partWHEN PREPARING A GEARED CONTINENTAL ACFT ENGINE FOR ASSY, MECHANIC NOTICED A MAIN BEARING INSERT APPEARED ABNORMAL. UPON CLOSER EXAMINATION, FOUND THE BEARING HAD ONLY ONE OIL HOLE. NORMALLY, BEARINGS HAVE TWO OIL HOLES. ONE IS FOR OIL SUPPLY TO THE CRANKSDR 99ZZZX577Manifold · wornAS PART OF INSPECTION, DEICE CONTROL AND MANIFOLD ARE CHECKED. FOUND MANIFOLD NOT OPERATING CORRECTLY. INTERNAL CHECK VALVES NOT SEALING WHEN AIR BLOWN IN ONE INLET AT A TIME. THIS COULD HAVE AN EFFORT ON BOOT OPERATION IF ONE VACUUM PUMP FAILED BY ALLOWINGSDR 98ZZZX883Crankcase · brokenCRANKCASE BROKE AT UPPER REAR BETWEEN MAGNETOS DOMINATING ON THE RT SIDE OF THE CRANKCASE PARTING SURFACE. NO CRANKCASE PARTS WERE MISSING, BUT IT APPEARS TO BE INTERNAL FAILURE. THE ENGINE WAS REMOVED AND SENT TO RAM AIRCRAFT OFR OVERHAUL.
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