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 AU981359Lug · separated(AUS) ROCKER SHAFT RETAINING LUG BROKE OFF THE ROCKER HAT ALLOWING THE INLET VALVE ROCKER SHAFT TO MIGRATE AND THE ROCKER TO DISLODGE. THE LUG IS NORMALLY SILVER SOLDERED TO THE ROCKER HAT. SUBMITTER SUSPECTED CAUSE AS POORLY SOLDERED JOINT.SDR AU980485Guide · worn(AUS) ENGINE CYLINDER REMOVED DUE TO LOW COMPRESSION. EXHAUST VALVE P/N 636242 FOUND WORN 0.178 MM (0.007 INCH). EXHAUST VALVE GUIDE P/N 652956 WORN 0.0432 MM (0.017 INCH).SDR 98ZZZX4471Valve Guide · wornDURING A ROUTINE COMPRESSION CHECK, LEAKAGE WAS FOUND PAST THE EXHAUST VALVE ON THE NR 2 CYLINDER. THE REMOVED CYLINDER, EXHAUST VALVE AND GUIDE WERE FOUND WORN OUT. SUBMITTER SUGGESTED POSSIBLE CAUSE AS DEFECTIVE PART AND/OR ASSEMBLY PROCESS FROM THE FACTORSDR CA980415020Cylinders · failed(CAN) ON APPROACH, THE ENGINE EXPERIENCED POWER LOSS, WITH ENGINE PERFORMANCE DETERIORATING THE ENGINE FAILED AND THE AIRCRAFT GLIDED TO A SAFE LANDING. POST-FLIGHT ENGINE COMPRESSION TEST REVEALED ALL FOUR CYLINDERS HAD LOW COMPRESSION. THE CYLINDERS AND PISSDR AU980402Valve · worn(AUS) THREE ENGINE CYLINDERS REMOVED DUE TO LOW COMPRESSION. ALL EXHAUST VALVES PN 646286 AND VALVE GUIDES PN 636242 WERE FOUND TO BE WORN BEYOND LIMITS WITH 0.508MM (.020 INCH), 1.016MM (.041 INCH) AND 1.168MM (.046 INCH) CLEARANCES.SDR AU980325Cylinder · worn(AUS) ENGINE CYLINDERS HAD LOW COMPRESSION. INVESTIGATION FOUND WORN EXHAUST VALVE GUIDES AND GLAZED AND OUT OF ROUND CYLINDER BORES.SDR 98ZZZX1715Piston · crackedDURING A ROUTINE OIL CHANGE, THE SUMP SCREEN WAS INSPECTED, FOUND A PEA SIZE PIECE OF CAST ALUMINUM. IT TURNED OUT TO BE A PIECE OF CYLINDER NR 3 PISTON SKIRT. ALSO, FROM THIS BROKEN-OUT PIECE, FROM THE CENTER OF THE BREAK, WAS A .50 INCH CRACK RADIATING UP SDR 98ZZZX1544Rocker Boss · failedABOUT 4 MINUTES AFTER TAKEOFF, ENGINE RAN ROUGH. A NORMAL LANDING WAS MADE. REMOVED COWL, NR 2 VALVE COVER HAD A 1 INCH HOLE IN IT. REMOVED VALVE COVER AND FOUND BOTH ROCKER SHAFT FORGED BOSSES BROKEN FOR EXHAUST ROCKER SHAFT. VALVE WAS NOT STUCK. PUSH ROSDR AU980329Cylinder · failed(AUS) LT ENGINE NR 1 CYLINDER FAILED. METAL CONTAMINATION OF OIL SYSTEM.SDR AU980385Valve Guide · loose(AUS) ENGINE INLET VALVE GUIDE FOUND LOOSE IN HEAD.SDR 98ZZZX1448Valve Seat · damagedDURING AIRCRAFT RUN-UP, THE PILOT NOTICED THE ENGINE WAS RUNNING ROUGH. THE MECHANIC PULLED A COMPRESSION CHECK AND FOUND THAT NR 3 CYLINDER HAD NO COMPRESSION. FURTHER INVESTIGATING AND CYLINDER REMOVAL SHOWED THE EXHAUST VALVE SEAT INSIDE THE CYLINDER HAD SDR AU980484Guide · worn(AUS) NR 3 CYLINDER WAS REMOVED FOR LOW COMPRESSION. THE EXHAUST VALVE GUIDE WAS FOUND TO BE WORN 0.483 MM (0.019 INCH). THE REMAINING CYLINDERS WERE THEN REMOVED AND ALL WERE FOUND TO BE IN A SIMILAR CONDITION. TIME IN SERVICE FOR THE CYLINDERS WAS 55 HRS.SDR CA980430004Cylinder · cracked(CAN) ENGINE RUNNING ROUGH IN-FLIGHT. POST-FLIGHT INSPECTION FOUND A CYLINDER CRACKED AROUND THE EXHAUST VALVE SEAT.SDR 99ZZZX600Valve Spring · brokenUPON REMOVAL OF CYLINDER NR 1, THE INNER VALVE SPRING P/N 631521 AND OUTER VALVE SPRING P/N 637837 WERE FOUND BROKEN. THE OUTER VALVE SPRING P/N 637837 ON CYLINDER NR 3 WAS FOUND BROKEN. CAUSE IS UNKNOWN. OWNER COMPLALINED OF EXCESSIVE ENGINE VIBRATION.SDR 99ZZZX599Valve Spring · brokenUPON REMOVAL OF CYLINDER NR 1, THE INNER VALVE SPRING P/N 631521 AND OUTER VALVE SPRING P/N 637837 WERE FOUND BROKEN. THE OUTER VALVE SPRING P/N 637837 ON CYLINDER NR 3 WAS FOUND BROKEN. CAUSE IS UNKNOWN. OWNER COMPLAINED OF EXCESSIVE ENGINE VIBRATION.SDR CA980325014Piston · failed(CAN) NR 2 ENGINE RAN ROUGH AFTER TAKEOFF, AIRCRAFT RETURNED TO BASE. POST FLIGHT INSPECTION FOUND NO COMPRESSION ON THE NR 1 CYLINDER. THE NR 1 CYLINDER PISTON WAS FOUND BURNT ON THE SIDE. INSPECTION OF THE LT MAGNETO FOUND THE DISTRIBUTOR BLOCK TO HAVE CARBSDR 98ZZZX2092Engine · failedTHIRTY MINUTES INTO LOCAL FLIGHT, ENGINE FAILED. PILOT MADE A FORCED LANDING IN A PLOWED FARM FIELD. NO VISIBLE DAMAGE INCURRED TO AIRPLANE. ON TEARDOWN, DEEP SCORING WAS FOUND IN THE OIL PUMP GEAR HOUSING. ALUMINUM AND PISTON RING PIECES WERE FOUND IN THESDR 98ZZZX1089Cylinder · crackedAPPROXIMATELY 30 MINUTES AFTER DEPARATURE, FLIGHT CREW NOTICED OIL LEAK IN LEFT ENGINE. CREW DIVERTED BACK TO AWM. MAINTENANCE FOUND CYLINDER NR 13 HEAD SEPARATING FROM BARREL.SDR 98ZZZX1079Valve Guide · defectiveCHECKED VALVE GUIDE CLEARANCE IAW SB 388B AND FOUND EXHAUST VALVES GUIDES IN CYLINDERS 1 AND 4 TO BE OUT OF SPECIFICATIONS. THE INTAKE AND EXHAUST VALVES IN BOTH CYLINDERS ALSO WERE BELOW MANUFACTURER'S SPECIFICATIONS.SDR 98ZZZX1986Valve Spring · failedPILOT REPORTED VIBRATION ON RT SIDE OF AIRCRAFT DURING TAKEOFF ROLL AND CLIMB OUT. COULD NOT CORRECT WITH ENGINE CONTROLS (RPM, M.A.P., FUEL OR MAGS). RETURNED TO AIRPORT MAINT FACILITY AND REPORTED OUT OF BALANCE PROP. UPON MAINT GROUND RUN, ENG RAN ROUGH,SDR AU980292Cylinder · leaking(AUS) NR 1 CYLINDER LEAKING BETWEEN CYLINDER AND BARREL.SDR AU980291Cylinder · defective(AUS) NR 2 AND NR 3 CYLINDERS LEAKING PAST EXHAUST VALVES.SDR AU980487Cylinder Head · separated(AUS) NR 2 CYLINDER HEAD SEPARATED FROM THE CYLINDER BARREL.SDR CA980317089Pushrod · cracked(CAN) WHILE CARRYING OUT LYCOMING SB 527C (RECALL OF PISTON PINS). THE NR 4 CYLINDER EXHAUST PUSH ROD WAS FOUND CRACKED AT THE TAPPET END. THE CRACK WAS APPROXIMATELY 12 MM LONG.SDR CA980317053Cylinder · cracked(CAN) AIRCRAFT WAS IN CRUISE WHEN PILOT HEARD A LOUD BANG ON THE NR 1 ENGINE. WITH LOSS OF 4 INCH MANIFOLD PRESSURE. THE ENGINE WAS MONITORED. AFTER LANDING A RUNUP AN INSPECTION FOUND A BLOWN OUT SPARK PLUG AND A CRACKED AND BURNT CYLINDER. THE CYLINDER WAS RSDR 99ZZZX584Stud · brokenLEFT ENGINE NR 2 CYLINDER BROKE 6 OF THE 8 STUDS HOLDING IT TO THE CRANKCASE. THIS RESULTED IN OIL LEAK AND CYLINDER FLANGE AND SKIRT BREAKING. TWO REMAINING STUDS AND NUTS WERE STILL SECURE. AFTER LOSS OF OIL, OIL PRESSURE DROPPED. ENGINE WAS CAGED AND A SDR AU980393Spark Plug · separated(AUS) LT ENGINE POWER DOWN DURING PRE TAKE-OFF CHECKS. INVESTIGATION FOUND NR 4 CYLINDER UPPER SPARK PLUG HAD SEPARATED FROM THECYLINDER. CAUSE APPEARS TO BE FROM EROSION OF THE SPARK PLUG HOLE UNDER THE HELICOIL. SUSPECT FROM A VOID FORMED WHEN WELD REPAIRSDR AU980214Valve Guide · loose(AUS) NR 1 CYLINDER EXHAUST VALVE GUIDE LOOSE.SDR CA980303008Cylinder · cracked(CAN) DURING REGULAR MAINTENANCE NR 2 CYLINDER WAS FOUND TO HAVE LOW COMPRESSION. THE CYLINDER WAS REMOVED AND CRACKS WERE FOUND ON BOTH SIDES OF THE BOTTOM SPARK PLUG HOLE. THE EXHAUST VALVE WAS ALSO FOUND BURNED.SDR 98ZZZX1856Intake Tube · crackedINTAKE TUBE CRACKED AT FLANGE. SUBMITTER STATED RESEARCH OF AIRCRAFT RECORDS DETERMINED THIS WAS THE THIRD INDUCTION TUBE IN THIS LOCATION THAT HAD CRACKED IN 1,100 HOURS. PART MISALIGNED WITH INDUCTION PLENUM.SDR AU980210Cylinder · separated(AUS) RT REAR CYLINDER HEAD SEPARATED.SDR CA980311001Stud · separated(CAN) LOSS OF MANIFOLD PRESSURE AND ENGINE VIBRATION ON NR 1 ENGINE NECESSITATED ENGINE SHUTDOWN IN FLIGHT. POST FLIGHT INSPECTION FOUND THE NR 3 CYLINDER HOLD DOWN STUDS (P/NS 38-13 & 50-15) AND THROUGH BOLTS WERE PULLED FROM THE CRANKCASE, CAUSING SEPARATIONSDR PNSA980204Cylinder · separatedLT ENGINE STARTED RUNNING ROUGH AND LOST POWER, RETURNED TO BASE. FOUND CYLINDER SEPARATED FROM CASE. REPLACED ENGINE.SDR AU980188Piston · cracked(AUS) PISTON CRACKED.SDR AU980209Cylinder · failed(AUS) RT FRONT CYLINDER HEAD SEPARATED AT ROCKER BOLT DOWN PAD.SDR 98ZZZX1000Cylinder · crackedTHE NR 2 CYLINDER WAS FOUND CRACKED FROM THE REAR SPARK PLUG PORT TO THE FRONT SPARK PLUG PORT ON THE UPPER INTAKE SIDE OF THE CYLINDER HEAD.SDR AU980380Rocker Arm · broken(AUS) NR 4 CYLINDER INLET VALVE ROCKER ARM BROKEN AND PUSHROD BENT. PART TC: 3,090.SDR AU980158Valve · leaking(AUS) NO1 CYLINDER EXHAUST VALVE LEAKING AND VALVE GUIDE WORN (STILLWITHIN LIMITS). NO3 CYLINDER INLET VALVE LEAKING.SDR 98ZZZX1309Valve Seat · defectiveFACTORY NEW CYLINDER REMOVED FROM THE NR 3 POSITION DUE TO LOW COMPRESSION. UPON DISASSEMLBY, NOTED THE INTAKE VALVE SEAT WAS NOT SEATED PROPERLY IN THE CYLINDER HEAD. SUSPECT CAUSE: DURING ASSEMBLY AT FACTORY, SEAT WAS NOT INSTALLED INTO THE MACHINED PORTISDR 98ZZZX1031Cylinder · separatedTHE CYLINDER HEAD SEPARATED FROM THE BARREL COMPLETELY THREE COOLING FINS DOWN FROM THE SPARK PLUG HOLE. THE CYLINDER REMAINS IN PLACE. DUE TO ENGINE ROUGHNESS, A PRECAUTIONARY SHUT DOWN WAS PERFORMED. AD 78-08-07 APPLIES TO THIS CONDITION. SUBMITTER RECOMSDR 98ZZZX990Bolt · failedPILOT REPORTED OIL LEAKING FROM RIGHT ENGINE. FOUND HOLE IN NR 5 CYLINDER ROCKER COVER. HEAD OF BOLT BROKE OFF THAT ATTACHES ROCKER ARM AND SHAFT TO CYLINDER ASSEMBLY. NEW BOLTS INSTALLED AND NEW ROCKER COVER.SDR 98ZZZX989Valve Spring · brokenRIGHT ENGINE RUNNING ROUGH. FOUND 8 OF 12 VALVE SPRINGS BROKEN. REMOVED AND REPLACED ALL VALVE SPRINGS.SDR 98ZZZX988Valve Spring · brokenRIGHT ENGINE RUNNING ROUGH. FOUND 8 OF 12 VALVE SPRINGS BROKEN. REMOVED AND REPLACED ALL VALVE SPRINGS.SDR 98ZZZX765Crankshaft · brokenCRANKSHAFT 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 98ZZZM332Cylinder · crackedWHILE IN CRUISE, NR 2 ENGINE BEGAN BACKFIRING REPEATEDLY ENGINE SHUT DOWN AND SECURED AND LANDED MDPC WITH NO INCIDENT. FOUND NR 4 CYLINDER CRACKED. REMOVED AND REPLACED WITH SERVICEABLE CYLINDER ASSY. AIRCRAFT RETURNED TO SERVICE. (M)SDR CA980519005Valve · broken(CAN) ENGINE SHUTDOWN IN CRUISE AND THE AIRCRAFT MADE AN UNSCHEDULED LANDING, AFTER THE ENGINE EXPERIENCED ROUGH RUNNING. POST-FLIGHT INSPECTION FOUND AN EXHAUST VALVE WITH THE HEAD DETACHED/FRACTURED. THE PISTON AND CYLINDER WERE DESTROYED AND THE OIL PAN WSDR AU980116Cylinder · defective(AUS) LH ENGINE NO2 AND NO3 CYLINDER HAD LOW COMPRESSION. NO2 CYLINDER PISTON DAMAGED. AFT THROUGH BOLTS EXCESSIVELY LOOSE. ENGINE HAD COMPLETED 14 HOURS OPERATION SINCE A BULK STRIP.SDR AU980651Cylinder · worn(AUS) NR 2 CYLINDER WORN BEYOND LIMITS.SDR 98ZZZX1044Cylinder · failedWHILE IN CRUISE FLIGHT, THE FLIGHT CREW NOTICED OIL COMING FROM THE ENGINE VENT. THE ENGINE WAS SECURED AND THE PROPELLER FEATHERED. AN UNEVENTFUL LANDING WAS MADE. INSPECTION FOUND CYLINDER NR 5 WITH NO COMPRESSION. CYLINDER TO BE REMOVED AND FURTHER TROUSDR AU980140Engine · worn(AUS) ENGINE EXHAUST VALVE GUIDES BADLY WORN. PISTON AND PISTON RINGS BADLY WORN. PISTON PINS AND CONNECTING ROD BUSHES WORN. OIL FILTER ALMOST COMPLETELY BLOCKED WITH CARBON. FUEL STRAINER LEAKING.
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