JASC 8530
Service difficulty reports · 4,342
Reports filed under 8530 · Reciprocating Engine Cylinder 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 = '8530' 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 = '8530' 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 96ZZZX4819Valve · failedENGINE LOST POWER ON TAKEOFF. PILOT ABLE TO MAINTAIN ALTITUDE AND RETURN TO AIRPORT. VALVE APPEARS TO BE P/N 75068 WHICH IS PRONE TO BREAKAGE WHEN USING FUEL HIGHER THAN 80/87 (REF: LYCOMING SB 404). ANY VALVES STILL IN SERVICE SHOULD BE REPLACED.SDR 96ZZZX4290Gasket · failedENGINE REPORTED TO RUN ROUGH AT LOW RPM'S AND HAVE POPPING SOUND. TROUBLESHOOTING FOUND THAT CYLINDERS', NR 1, NR 3, AND NR 5, INDUCTION ELBOW GASKETS HAD BEEN SUCKED IN. ENGINE HAS 391.0 HOURS SINCE FACTORY REMANUFACTURE. ATTACHING HARDWARE WAS FOUND TO BESDR CA960807011Valve · broken(CAN) DURING INSPECTION THE EXHAUST VALVE ON #1 CYLINDER WAS FOUND BROKEN. COMPRESSION TEST INDICATED "0" COMPRESSION.SDR CA960807010Piston Ring · broken(CAN) INSPECTION FOUND THE TOP RING ON THE #3 CYLINDER BROKEN INTO SEVEN PIECES. THE COMPRESSION CHECK FOUND COMPRESSION AT 12 PSI.SDR 96ZZZX4399Spring Retainer · failedWHILE CHANGING VALVE COVER GASKET ON NR 3 CYLINDER, MECHANIC FOUND TWO SMALL PIECES OF METAL IN VALVE COVER. INVESTIGATED AND DETERMINED PIECES CAME FROM THE EXHAUST VALVE INNER VALVE SPRING RETAINER TCM. PERFORMED HIDDEN DAMAGE INSPECTION. INSPECTED AND CHSDR CA960910001Stud · broken(CAN) PILOT LANDED AFTER IN FLIGHT ENGINE VIBRATION. THERE WAS OIL ON THE WIND SCREEN. INSPECTION REVEALED THE #1 CYLINDER WAS LOOSE ON THE CRANKCASE, EIGHT CYLINDER HOLDDOWN STUDS WERE FOUND SHEARED FLUSH WITH THE FLANGE THE REMAINING TWO STUDS WERE FOUND LOOSDR 96ZZZX3932Cylinder · crackedENGINE INSPECTION FOUND NR 1 CYLINDER HEAD HAD CRACKED FROM FORWARD SPARK PLUG BOSS UP OVER CENTER OF CYLINDER HEAD AROUND BELOW EXHAUST PORT, FORWARD AT CYLINDER HEAD/BARREL ATTACH AREA, BACK TO LOWER SIDE OF FORWARD SPARK PLUG BOSS.SDR 96ZZZX3799Valve · failedIN-FLIGHT FAILURE OF NR 8 CYLINDER EXHAUST VALVE. VALVE HEAD SNAPPED OFF. SUSPECT CAUSE OVERHEATED VALVE DUE TO REDUCED LEAD IN FUEL.SDR CA960923012Piston · cracked(CAN) DURING THE ANNUAL AIRCRAFT INSPECTION THE #2 CYLINDER COMPRESSION CHECK WAS LOW AT 43/80. UPON REMOVAL OF THE CYLINDER, THE PISTON WAS FOUND CRACKED IN TWO PLACES ON THE WRIST PIN BOSSES. A NEW CYLINDER AND PISTON WILL BE INSTALLED.SDR 96ZZZX3877Rocker Shaft · bentROUTINE CHECK OF O320 SERIES ENGINE ROCKER SHAFTS FROM STOCK, FOUND P/N SL13790A, LOT NR 510924 DATED 4-30-96, 9 OUT OF 20 WERE FOUND BENT.SDR 96ZZZX3766Nozzle · threads strippedWHEN REMOVING FUEL INJECTOR NOZZLE FOR CLEANING AT FIRST 91-HOUR TSMOH, FACTORY REMANUFACTURE, NOZZLE CAME OUT OF CYLINDER HEAD WITH ALUMINUM, STRIPPED THREADS IN CLYINDER HEAD.SDR 96ZZZX3923Elbow · blown outAIRCRAFT RETURNED FROM FLIGHT ON SHORT FINAL. ENGINE RPM COULD NOT BE REDUCED BELOW 1,400 RPM. SECURED ENGINE WITH MIXTURE TO PREVENT ASYMMETRIC THRUST CONDITION. UPON INSPECTION BY MECHANIC, FOUND BLOWN OUT INDUCTION ELBOW. SECOND OCCURRENCE IN 6 MONTHS. SDR 96ZZZX3795Cylinder · crackedON INSPECTION, THE CYLINDER WAS FOUND TO HAVE A CRACK FROM THE SPARK PLUG BOSS TO THE FUEL NOZZLE. THE CRACK TRAVELS ALONG THE CASTING MARK ON THE CYLINDER. THE CYLINDER WAS STILL HOLDING 78/80. SUBMITTER BELIEVES THAT THIS IS A MANUFACTURING PROBLEM.SDR CA960722001Valve Seat · dislodged(CAN) AFTER LANDING THE PILOT NOTICED THE NR 2 ENGINE WAS RUNNING ROUGH AT IDLE. INVESTIGATION FOUND THERE WAS NO COMPRESSION ON #6 CYLINDER. AFTER THE CYLINDER WAS REMOVED IT WAS REVEALED THE EXHAUST VALVE SEAT WAS DISLODGED FROM THE CYLINDER AND HOLDING THE SDR AU961050Valve Guide · worn(AUS) ENGINE CYLINDER EXHAUST VALVE GUIDE WORN AND LOOSE IN CYLINDER HEADSDR 96ZZZX3774Cylinder · separatedPILOT REPORTED ROUGH ENGINE AND LARGE RPM DROP ON MAG CHECK. INSPECTION FOUND NR 3 CYLINDER CRACKED. WHEN CYLINDER REMOVED, IT WAS DISCOVERED THE HEAD WAS COMPLETELY SEPARATED. BOTTOM SPARK PLUG WAS FOULED.SDR AU961060Cylinder · cracked(AUS) ENGINE CYLINDER CRACKED IN AREA OF TOP SPARK PLUG HOLESDR 96ZZZX3678Piston · crackedDURING SCHEDULED OIL CHANGE, OWNER REQUESTED A COMPRESSION CHECK BE DONE. NR 1 CYLINDER WAS LOW AT 28/80. FURTHER INVESTIGATION REVEALED THE FOLLOWING: PISTON CRACKED FROM SKIRT TO FACE AT 6:00 O'CLOCK POSITION. TOP COMPRESSION RING BROKEN AND CYLINDER WALSDR 96ZZZX4104Rocker Cover · groovedENGINE DISASSEMBLED DUE TO ROTOR BLADE STRIKE. FOUND SEVERAL DEEP RINGS WORN IN ROCKER COVERS WHERE ROCKER SHAFTS RIDE. (NOT CAUSED BY ACCIDENT.) SUBMITTER STATED THIS PROBLEM HAS BEEN CORRECTED ON OTHER TYPES OF LYCOMINGS BY INSTALLATION OF PLASTIC THRUST SDR 96ZZZX3697Cylinder · crackedENGINE SHOWED EVIDENCE OF OIL LEAK. MECHANIC MUST HAVE THOUGHT HE HAD CURED PROBLEM. AIRCRAFT CLEARED FOR FLIGHT. NR 1 CYLINDER DEPARTED ENGINE SOME TIME AFTER PILOT NOTICED SMOKE IN COCKPIT. INSTRUMENTS SHOWED NORMAL READINGS. CYLINDER HAD EVIDENCE OF OLSDR 96ZZZX3536Valve · blocked openON INITIAL RUN-UP AFTER INSTALLING ENGINE AFTER MAJOR OVERHAUL, ENGINE WAS RUN AROUND 5 MINUTES AT 1,000-1,200 RPM'S. ENGINE RPM WAS INCREASED TO 1,700 FOR MAG CHECK. THE ENGINE STARTED TO RUN EXTREMELY ROUGH. ENGINE WAS SHUT DOWN. COMPRESSION CHECK SHOWEDSDR 96ZZZX3876Cylinder · crackedINSPECTION FOUND NR 4 CYLINDER CRACKED FROM OUTSIDE RADIUS OF INTAKE VALVE TO OUTSIDE RADIUS OF EXHAUST VALVE. CYLINDER HEAD SPLIT OPEN BLOWING BOTTOM SPARK PLUG FROM CYLINDER.SDR CA960723014Cylinder · cracked(CAN) ENGINE EXPERIENCING BACKFIRING AND LOSS OF POWER. INVESTIGATION FOUND NR 1 CYLINDER HEAD CRACKED AROUND THE ROCKER BOX COVER.SDR 96ZZZX4400Piston · undersizeTHE ENGINE BACKFIRED AND MOMENTARILY HAD A LOSS OF POWER. THE PISTONS WERE FOUND UNDERSIZED AT THE SKIRT END. THIS COULD HAVE POSSIBLY BEEN CAUSED BY IMPROPER BREAK IN PROCEDURES.SDR 96ZZZX3870Piston · ring failedUPON DISASSEMBLY AFTER LOW COMPRESSION READING, FOUND THE LOWER PORTION BY OIL SCRAPER RING MISSING FROM THE PISTON. SUSPECT DUE TO THE OIL SCRAPER RING HANGING UP, THUS, STUCTRURAL MALFUNCTION.SDR AU960968Piston · wrong part(AUS) NO3 CYLINDER/PISTON COMBINATION INCORRECT - A +015IN OVERSIZE PISTON PNO 646743 WAS FITTED TO A STANDARD SIZE CYLINDER PNO 649484 - PISTON HAD PICKED UP IN CYLINDER BORE - METAL CONTAMINATION OF OIL SYSTEM - CYLINDER HAD BEEN CHANGED ON 13NOVEMBER 1995 SDR 96ZZZX3441Ring · brokenTEMPORARY POWER LOSS DURING CRUISE. SUSPECT CAUSE: BROKEN PISTON RING WHICH BECAME WEDGED BETWEEN PISTON AND CYLINDER WALL. REPLACED COMPLETE CYLINDER ASSY.SDR CA960715009Valve · burnt(CAN) DURING INSPECTION IT WAS FOUND THAT THERE WAS NO COMPRESSION ON #3 & #4 CYLINDERS. AFTER DISASSEMBLY IT WAS FOUND THAT THE ROCKER ARMS OF THE EXHAUST AND INTAKE HAD BEEN MISINSTALLED AT OVERHAUL. THE ROCKER ARM FOR THE INTAKE WAS INSTALLED ON THE EXHAUSTSDR 96ZZZX5948Pushrod · wornDURING 100-HOUR INSPECTION, NOTICED FOUR PUSHROD TUBES WERE DENTED. UPON FURTHER INVESTIGATION, FOUND THAT THREE OF THE FOUR PUSHRODS WERE WORN DUE TO RUBBING ON THE PUSHROD SHROUD. THE THREE PUSHRODS WERE WORN FROM 25 PERCENT TO 80 PERCENT THROUGH WALL THICSDR 96ZZZM1140Cylinder Assy · crackedFLT NR 43 - SHUT DOWN NR 1 ENGINE AT 2110Z DUE TO OIL LOSS. AIRCRAFT FERRIED FROM OTZ TO ANC. MAINTENANCE REPLACED NR 2 CYLINDER DUE TO CRACKED HEAD. AIRCRAFT RETURNED TO SERVICE. (M)SDR AU960881Cylinder · separated(AUS) LH ENGINE NO6 CYLINDER SEPARATED - SEE MDR 96/0906 FOR FURTHER INFORMATIONSDR 96ZZZX3849Cylinder · crackedFLT 32 - SHUT DOWN NR 2 ENGINE AT 1245Z DUE TO ROUGH RUNNING AND UNABLE TO LEAN. MAINTENANCE REPLACED NR 16 CYLINDER DUE TO A CRACKED HEAD. AIRCRAFT RETURNED TO SERVICE.SDR 96ZZZX3326Cylinder · crackedFOUR NEW LW-12993 CYLINDERS HAVE CRACKS AT THE ROCKER BOX DRAIN FITTING BOSS. THESE CRACKS OCCUR AT A CASTING FLAW. THIS MAY BE CAUSED BY THE TAPERED THREAD OF THE MS-20823-6D ELBOW FITTING.SDR 96ZZZX3325Cylinder · crackedFOUR NEW LW-12993 CYLINDERS HAVE CRACKS AT THE ROCKER BOX DRAIN FITTING BOSS. THESE CRACKS OCCUR AT A CASTING FLAW. THIS MAY BE CAUSED BY THE TAPERED THREAD OF THE MS-20823-6D ELBOW FITTING.SDR 96ZZZX3324Cylinder · crackedFOUR NEW LW-12993 CYLINDERS HAVE CRACKS AT THE ROCKER BOX DRAIN FITTING BOSS. THESE CRACKS OCCUR AT A CASTING FLAW. THIS MAY BE CAUSED BY THE TAPERED THREAD OF THE MS-20823-6D ELBOW FITTING.SDR 96ZZZX3323Cylinder · crackedFOUR NEW LW-12993 CYLINDERS HAVE CRACKS AT THE ROCKER BOX DRAIN FITTING BOSS. THESE CRACKS OCCUR AT A CASTING FLAW. THIS MAY BE CAUSED BY THE TAPERED THREAD OF THE MS-20823-6D ELBOW FITTING.SDR 96ZZZX3319Cylinder · head crackedFOUND NR 2 CYLINDER HEAD CRACKED AT LOWER SPARK PLUG HOLE.SDR 96ZZZX3343Cylinder · helicoil failedLOWER SPARK PLUG HELICOIL BLEW OUT ON NR 3 CYLINDER RESULTING IN LOSS OF THAT CYLINDER COMRPESSION AND LOSS OF ENGINE POWER. AIRCRAFT LANDED ON HIGHWAY WITHOUT INCIDENT. SUSPECT CAUSE: OVERTORQUE OR UNDERTORQUE OF SPARK PLUG ALLOWING PLUG TO MOVE IF UNDERTOSDR CA960709006Valve Lifter · broken(CAN) ROUGH ENGINE RUNNING LED TO INSPECTION WHICH REVEALED #2 CYLINDER EXHAUST VALVE LIFTER WAS BROKEN. ENGINE WAS REMOVED AND SENT TO R&O WHERE FAILURE WAS ATTRIBUTED TO MISASSEMBLY OF VALVE ROCKER ARMS, INTAKE FOR EXHAUST AND VICE VERSA, THIS CONDITION ALSOSDR AU961153Piston · damaged(AUS) NO3 CYLINDER PISTON DAMAGED AND PISTON RINGS BROKEN - SUSPECT CAUSED BY DETONATIONSDR AU960918Piston · damaged(AUS) ENGINE NO3 CYLINDER PISTON RING FOUND BROKEN AND PISTON DAMAGED IN LINE WITH EXHAUST VALVE - SUSPECT CAUSED BY DETONATIONSDR AU961044Stud · broken(AUS) ENGINE ROCKER ARM STUD BROKEN - PUSHROD BENT - LOSS OF ENGINE OILSDR 96ZZZX3910Spring Seat · failedTHE OPERATOR INCURRED AN IN-FLIGHT FAILURE. INSPECTION REVEALED VALVE SEAT FAILED. SUBMITTER STATED THIS UNIT WAS NOT REPLACED DURING LAST OVERHAUL BECAUSE LYCOMING SB 447A FAILED TO LIST LTO-360-E1A6D AS AN EFFECTED ENGINE. SUBMITTER STATED AD 80-14-07 NEGSDR AU961022Cylinder · cracked(AUS) ENGINE CYLINDER CRACKED FROM EXHAUST VALVE SEAT THROUGH SPARK PLUG HOLESDR CA960715010Valve · disintegrated(CAN) DURING FLIGHT THE PILOT REPORTED LOSS OF ENGINE POWER. POST FLIGHT INVESTIGATION FOUND THE #3 CYLINDER EXHAUST VALVE HAD COMPLETELY DISINTEGRATED. AFTER REPLACING THE #3 CYLINDER A RUN-UP WAS CARRIED OUT. EXCESSIVE ENGINE VIBRATION WAS EVIDENT. FURTHER ISDR 96ZZZX3813Cylinder · head leakageOVER LAST 200 HOURS, CYLINDER HEAD SEPARATED ON 3 CYLINDERS IN FLIGHT OR ON TAKEOFF. THE 4TH CYLINDER HAD STAINS AND LEAKAGE AND REMOVED BEFORE FAILURES, BUT WAS NOT BETWEEN NR 2 AND NR 3 FIN PER AD 78-08-07. IT WAS LEAKING BETWEEN TOP STEEL FIN AND NR 1 ALUSDR CA960620023Valve Seat · detached(CAN) PILOT REPORTED LOW ENGINE POWER AND SUCKING SOUND ON SHUTDOWN. #3 CYLINDER EXHAUST VALVE SEAT OUT OF POSITION KEEPING VALVE OPEN.SDR AU960860Cylinder · separated(AUS) NO2 CYLINDER HEAD SEPARATED FROM BARRELSDR AU960928Cylinder · cracked(AUS) ENGINE NO2 ENGINE CYLINDER CRACKED IN THE INLET PORT - CRACK LENGTH APPROXIMATELY 40MM (1.5IN) - THE CRACK WAS DIFFICULT TO SEE DUE TO THE ENGINE BAFFLINGSDR CA960620022Cylinder · cracked(CAN) OIL LEAK FOUND AFTER FLIGHT. ENGINE CYLINDER CRACKED 1/3 RD AROUND THE BARREL.
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