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 98ZZZX2429Cylinder · wornCYLINDER ASSY HAD EXTREME CLEARANCES BETWEEN VALVES AND VALVE GUIDES WHICH IS NOT INDICATIVE OF 307.0 HOURS OF OPERATION ON A CYLINDER ASSY. UTILIZING USAF SPECS, I.E., SODIUM FILLED DOME TYPE EXHAUST VALVES AND CLOSE TOLERANCE STEEL VALVE GUIDES. IN ADDITIOSDR 98ZZZX2428Cylinder · wornCYLINDER ASSY HAD EXTREME CLEARANCES BETWEEN VALVES AND VALVE GUIDES WHICH IS NOT INDICATIVE OF 307.0 HOURS OF OPERATION ON A CYLINDER. UTILIZING USAF SPECS, I.E., SODIUM FILLED DOME TYPE EXHAUST VALVES AND CLOSE TOLERANCE STEEL VALVE GUIDES. ALSO, EXCESSIVESDR 98ZZZX2427Cylinder · wornCYLINDER ASSY HAD EXTREME CLEARANCES BETWEEN VALVES AND VALVE GUIDES WHICH IS NOT INDICATIVE OF 307.0 HOURS OF OPERATION ON A CYLINDER ASSY. UTILIZING USAF SPECS, I.E., SODIUM FILLED DOME TYPE EXHAUST VALVES AND CLOSE TOLERANCE STEEL VALVE GUIDES. ALSO, EXCESDR 98ZZZX2426Cylinder · wearCYLINDER ASSY HAD EXTREME CLEARANCES BETWEEN VALVES AND VALVE GUIDES WHICH IS NOT INDICATIVE OF 307.0 HOURS OF OPERATION ON A CYLINDER. UTILIZING USAF SPECS, I.E., SODIUM FILLED DOME TYPE EXHAUST VALVES AND CLOSE TOLERANCE STEEL VALVE GUIDES. ALSO, EXCESSIVESDR CA981014005Cylinder · cracked(CAN) THE ENGINE WAS RUNNING ROUGH DURING RUN-UP. THE ENGINE WAS SHUTDOWN AND INSPECTION FOUND THE NR 9 CYLINDER CRACKED AND SEPARATED BETWEEN THE HEAD AND THE BARREL. THE CYLINDER WAS REPLACED AND THE ENGINE RAN SMOOTHLY.SDR AU980879Exhaust Valve · damaged(AUS) NR 6 CYLINDER EXHAUST VALVE FAILED. VALVE CONTACTED PISTON RESULTING IN SMALL METAL FRAGMENTS PASSING INTO THE TURBOCHARGER CAUSING IT TO SEIZE.SDR AU980568Spring · broken(AUS) LT ENGINE, NR 2 CYLINDER INLET VALVE PUSHROD SHROUD TUBE RETAINING SPRING BROKEN IN HALF AND LYING IN THE BOTTOM OF THE ROCKER BOX.SDR 98ZZZX2600Valve · failedAIRCRAFT IN-FLIGHT, LOST POWER, MADE FORCED LANDING ON ROAD. DAMAGE TO WINGS AND FUSELAGE, NO INJURIES, TEAR DOWN OF ENGINE REVEALED BROKEN NR 2 CYLINDER INTAKE VALVE. ENGINE TSOH: 120 HOURS.SDR 98ZZZX2125Rocker Arm · failedAIRCRAFT EN ROUTE TO FAIRBANKS, AK. AT CRUISE, ENGINE RAN ROUGH, LOST ALTITUDE, MADE EMERGENCY LANDING ON ROAD. TEAR DOWN OF NR 4 ROCKER BOX SHOWED EXHAUST VALVE, ROCKER ARM BROKEN. TSO: 145 HOURS.SDR 98ZZZX2120Cylinder · failedDURING 100-HOUR INSPECTION, FOUND METAL PARTICLES IN OIL FILTER. FOUND TO BE PISTON PIN WRIST PLUG MATERIAL. CYLINDERS SENT TO MANUFACTURER FOR EVALUATION. REQUIRED OVERHAUL OR REPLACEMENT OF CYLINDERS AFFECTED. APPEARED TO BE CYLINDERS 1 AND 2 (COOLEST RUSDR 98ZZZX2186Cylinder · crackedSEVENTY HOURS AGO, THIS ENGINE HAD TWO CRACKED CYLINDER HEADS. THE CRACKS WERE IN THE AREA BETWEEN THE TOP SPARK PLUG HOLE AND THE FUEL INJECTOR BOSS. THIS INSPECTION SHOWED ANOTHER CRACK. THE OPPOSITE ENGINE HAD FOUR CRACKED HEADS AT THIS TIME AND ONE CRACSDR 98ZZZX2185Cylinder · crackedSEVENTY HOURS AGO, THIS ENGINE HAD TWO CRACKED CYLINDER HEADS. THE CRACKS WERE IN THE AREA BETWEEN THE TOP SPARK PLUG HOLE AND THE FUEL INJECTOR BOSS. THIS INSPECTION SHOWED ANOTHER CRACK. THE OPPOSITE ENGINE HAD FOUR CRACKED HEADS AT THIS TIME AND ONE CRACSDR AU980622Cylinder · cracked(AUS) ENGINE CYLINDER CRACKED BETWEEN THE EXHAUST VALVE AND THE LOWER SPARK PLUG HOLE. PART TC: 1,680.SDR CA980623015Stud · broken(CAN) DURING INSPECTION THE BOTTOM FORWARD STUD ON NR 2 CYLINDER, AT THE BASE OF THE CYLINDER FLANGE, WAS FOUND BROKEN. THE REPORTER SUGGESTS THAT THE STUD WAS NOT COMPLETELY THREADED INTO THE CASE, WHICH CAUSED THE NUT TO BECOME THREAD BOUND WHICH STRESSED TSDR 98ZZZX3561Cylinder · mismanufacturedENGINE L-34695-27A O/H BY TEXTRON LYC 11-8-97. INSTALLED 2-20-98. FOLLOWING TEST FLIGHT AND BREAK-IN, ACFT RELEASED FOR FLIGHT TRAINING. AT ENG SMOH 16.8 HRS ON TAKEOFF, A LOSS OF RPM AND DEGRADED CLIMB PERFORMANCE REQUIRED IMMEDIATE RETURN. SUBMITTER STATSDR 98ZZZX2164Cylinder · crackedINSPECTION FOUND NR 4 CYLINDER CRACKED IN ROCKER BOSS AREA.SDR 98ZZZX2044Spring Seat · failedENGINE SUCTION SCREEN REMOVED DURING ANNUAL INSP AND SEVERAL LARGE PIECES OF FERROUS METAL WERE FOUND. RECORDS INDICATED THE ENG HAD NEW CYLINDERS INSTALLED DURING OVERHAUL 272.7 HOURS PREVIOUSLY. THE PIECES OF METAL WERE FROM THE LOWER INTAKE VALVE SPRING SSDR CA980602028Guide · worn(CAN) DURING 100 HOUR INSPECITON, THE COMPRESSION ON #3 CYLINDER WAS FOUND LOW. TROUBLESHOOTING FOUND THE EXHAUST VALVE LOOSE WITHIN THE GUIDE. A CIRCULAR PIECE OF METAL WAS FOUND IN THE OIL RETURN GALLEY. IT WAS NOT READILY EVIDENT WHERE THE METAL ORIGINATED,SDR CA980513004Exhaust Valve · fractured(CAN) AFTER A FORCED LANDING, INSPECTION FOUND THE NR 3 CYLINDER EXHAUST VALVE BROKEN IN THE AREA OF THE FILLET.SDR 98ZZZX2138Piston Ring · wornTHIS ENGINE HAD 3 CYLINDERS OVERHAULED WITH RINGS IN THE FIELD. THE FOURTH WAS REPLACED WITH A COMPLETE CHROME CYLINDER ASSY. AFTER 30 HOURS OF FLIGHT, THE OIL CONSUMPTION AND BLOW-BY BECAME EXCESSIVE. A COMPRESSION TEST SHOWED 20/80 OR THE 3 OVERHAULED ANDSDR 98ZZZX2031Valve Guide · defectiveDURING PRE-TAKEOFF RUNUP, ENGINE STARTED VIBRATING AT MID-RPM RANGE AND WOULD NOT ACCELERATE. FOUND NR 3 AND NR 4 EXHAUST VALVES STICKING. REAMED GUIDES TO PROPER DIMENSION. ENGINE HAS 107.6 HOURS SINCE FACTORY OVERHAUL. THIS OPERATOR HAS HAD NUMEROUS LOW SDR CA980519007Cylinders · worn(CAN) ALL ENGINE CYLINDERS WERE REPLACED DUE TO WEAR. THE ENGINE WAS EXPERIENCING HIGH OIL CONSUMPTION. THE SUBMITTER STATES THIS IS THE SECOND TIME THE CYLINDERS HAVE HAD TO BE REPLACED IN 1,025 HOURS AND SUGGESTS THAT THE USE OF 15W50, ALONG WITH THE SHORTSDR AU980690Cylinder · leaking(AUS) NR 5 CYLINDER LEAKING FROM BARREL/HEAD JOINT. ENGINE WAS ON THE FIRST TEST FLIGHT FOLLOWING AN ENGINE REBUILD.SDR 99ZZZX580Valve · failedINTAKE VALVE SEAT CAME LOOSE, STUCK UNDER VALVE. CYLINDER CERMINIL STEEL (EC) ENG T.W. SMITH OVERHAULED. PART TIME 102.8 HRS. AIRCRAFT LANDED RESTARTED, WOULD NOT DEVELOP POWER.SDR CA980519002Cover · cracked(CAN) ENGINE OIL LEAK. INSPECTION FOUND NR 5 CYLINDER PUSH ROD COVER CRACKED AT BEAD. PUSH ROD COVER REPLACED.SDR 98ZZZX3953Cylinder · failedNR 1 CYLINDER ON NR 2 ENGINE FAILED. SHUT DOWN NR 2 ENGINE AND FEATHERED. RETURNED TO ANCHORAGE.SDR 98ZZZX2028Piston Pin · failedWHILE C/W DIFFERENTIAL COMPRESSION CHECK FOUND BLOW-BY ON THE NR 4 CYLINDER PRESSURIZING THE CRANKCASE, AIR COMING OUT OF THE OIL FILLER TUBE. UPON NR 4 CYLINDER REMOVAL, FOUND ONE PISTON PIN PLUG WORN AWAY. CYLINDER WAS WORN WHERE THE PISTON PIN WAS MAKING SDR 98ZZZX2468Cylinder · failedPILOT WAS IN NORMAL CRUISE WHEN HE HAD A SUDDEN POWER LOSS AND ENGINE VIBRATION. AN UNEVENTFUL LANDING WAS MADE ON A ROAD. INVESTIGATION REVEALED THE NR 2 CYLINDER HAD SEPARATED ABOUT 2 INCHES FROM THE ENGINE CASE. THE SEPARATION WAS THROUGH THE STEEL PORTISDR 98ZZZX2601Piston · wornPISTON PIN BORE IN PISTON WORN. PISTONS HAVE 20 HOURS IN SERVICE SINCE NEW. PARTS WERE BOUGHT FROM SUPERIOR PARTS.SDR 98ZZZX2198Valve · failedHEAD OF VALVE SEPARATED IN-FLIGHT. ENGINE HAD APPROXIMATELY 2,000 HOURS.SDR 98ZZZX1862Cylinder · defectiveINSTALLED NEW CYLINDER ASSEMBLIES. HAD NO COMPRESSION NR 1 CYLINDER. REMOVED, FOUND METAL CHIP UNDER VALVE. SUSPECT CAUSE - IMPROPER CLEANING PROCEDURE PRIOR TO ASSEMBLY. SUBMITTER RECOMMENDATION - MORE USEFUL INSPECTION (QC).SDR CA980504026Cylinder · cracked(CAN) FOUND THE ALUMINUM HEAD ON NR 3 CYLINDER CRACKED AT THE TOP OF THE STEEL BARREL.SDR CA980504004Piston Pin Plug · worn(CAN) DURING INSPECTION, EXCESSIVE NON-FERROUS METAL (SLIVERS) WAS FOUND IN THE OIL SCREEN. FURTHER INSPECTION FOUND THE NR 2 CYLINDER PISTON PIN PLUG BADLY WORN.SDR 98ZZZX2636Cylinder · wornREMOVED NR 1, NR 2, AND NR 4 CYLINDERS DUE TO LEAKAGE PAST RINGS. RINGS TOTALLY WORN OUT. ONE CYLINDER CRACKED. EXCHANGE CYLINDER SUPPLIED. TWO CYLINDERS BURNED TO TIO. NEW PISTONS AND RINGS INSTALLED. NEW INTAKE SEALS. NEW OIL RETURN SLEEVES, 6L M20W50SDR 98ZZZX2117Piston · failedABOUT 15 SECONDS AFTER TAKEOFF, ENGINE BEGAN TO RUN ROUGH AND LOSE POWER. PILOT COULD NOT MAINTAIN ALTITUDE, AND MADE AN UNEVENTFUL LANDING. INSPECTED ENGINE, FOUND NR 5 PISTON BROKEN AND NO LONGER IN THE CYLINDER; ALSO, A 2 INCH CRACK FROM BASE OF NR 5 PISTSDR AU980489Guide · worn(AUS) DURING PERIODIC INSPECTION, NR 4 CYLINDER COMPRESSION WAS 20/80. THE EXHAUST VALVE P/N 646286 WAS REMOVED AND FOUND TO BE WORN 0.203 MM (0.008 INCH) JUST ABOVE STEM NECK. THE VALVE GUIDE P/N 643767 WAS WORN 0.457 MM (0.018 INCH) AT THE LOWER HALF AREA.SDR 99ZZZX597Cylinder · brokenPILOT FELT DIFFFERENT VIBRATION ON A SHORT PART 91 FLIGHT. A COLD CYLINDER CHECK WAS DONE, AND NR 8 FOUND TO BE COLD. REMOVED CYLINDER AND FOUND PART OF VALVE FACE BROKEN OFF. POSSIBLY DUE FROM OLD AGE. CHANGED CYLINDER AND PISTON.SDR AU980404Cylinder · cracked(AUS) ENGINE CYLINDER LEAKING OIL AT BARREL TO HEAD JOINT AND BETWEEN FIRST AND SECOND BOTTOM FINS ON BARREL AREAS. CYLINDER WAS REMOVED AND A PENETRANT CHECK FOUND A CRACK 40MM (1.57 INCH) IN LENGTH (INSIDE) AT THE BARREL TO HEAD JOINT. PART TC: 1,327.SDR 98ZZZX2160Valve Keeper · wornVALVE KEEPERS WORN, BUT STILL INSTALLED. LET VALVE ASSY MOVE DOWN IN KEEPER ASSY. VALVE WOULD NOT COMPLETELY CLOSE. NO DAMAGE TO CYLINDER OR PISTON.SDR 98ZZZX1597Cylinders · crackedWHILE INVESTIGATING AN OIL LEAK, STAINS WERE NOTED ON THE LOWER SIDE OF THE ENGINE CYLINDERS. THE 4 EACH CYLINDERS WERE REMOVED FOR FURTHER INVESTIGATION AND CRACKS WERE NOTED APPROXIMATELY 1.25 INCHES DOWN FROM THE BARREL TO END. THE CRACKS WERE ON THE UPPESDR 98ZZZX1675Valve Guide · defectiveON TAKEOFF, A MOMENTARY ENGINE ROUGHNESS PROMPTED THE PILOT TO ABORT TAKEOFF. THE AIRCRAFT EXCEEDED RUNWAY LENGTH AND STRUCK AN ANTENNA. INSPECTION OF THE ENGINE REVEALED A BUILD-UP OF CARBON IN THE NR 3 EXHAUST VALVE GUIDE. NOTE: ALL EXHAUST VALVE GUIDES SDR 98ZZZX1582Cylinder · separationINSPECTION FOUND NR 2 CYLINDER SEPARATED BETWEEN BORE AND HEAD.SDR 98ZZZX1471Rocker Shaft · looseA DEAD CYLINDER CAUSED AIRCRAFT TO LAND. TROUBLESHOOTING FOUND NR 3 CYLINDER DEAD. WHEN REMOVING THE VALVE COVER, FOUND THE INTAKE AND EXHAUST ROCKER SHAFTS LOOSE AND ONE RETAINING NUT WAS INSIDE THE VALVE COVER. THE ACFT HAD JUST BEEN RETURNED TO SERVICE 2 SDR CA980417001Head · separated(CAN) ON TAKEOFF, THE PILOT HEARD A POP AND THE ENGINE HAD A POWER LOSS. ON RETURN TO RAMP, INSPECTION FOUND THE NR 9 CYLINDER HEAD SEPARATED FROM THE BARREL. THE CYLINDER ASSEMBLY WAS REPLACED AND THE AIRCRAFT RETURNED TO SERVICE.SDR AU980386Post · broken(AUS) NR 3 CYLINDER EXHAUST VALVE ROCKER POST FAILED.SDR 98ZZZX1920Valve · failedAIRCRAFT WAS ON A TRAINING FLIGHT WHEN POWER WAS LOST, WITH 1500 RPM BEING MAXIMUM AVAILABLE. A SAFE LANDING WAS MADE ON A COUNTY STONE ROAD. INVESTIGATION REVEALED THE INTAKE VALVE STEM HAD BROKEN AT THE BOTTOM OF VALVE KEEPER RECESS. KEEPER AND TOP OF STESDR 98ZZZX1859Piston · crackedAIRCRAFT WAS IN SHOP FOR ANNUAL INSPECTION, CHECKING COMPRESSIONS. FOUND 3 CYLINDERS WITH BELOW ACCEPTABLE COMPRESSION READINGS. PULLED CYLINDERS TO EXAMINE. FOUND BROKEN RINGS IN 2 CYLINDERS AND CRACKED PISTONS. DECISION WAS MADE TO REMOVE THE 3 OTHER ACCSDR 98ZZZX1452Retain Spring · brokenFOUND OIL LEAKING FROM COWL. REMOVED COWL. FOUND NR 6 CYLINDER EXHAUST PUSH ROD MOVED INTO UPPER CYLINDER. REMOVED ROCKER COVER. FOUND SHROUD TUBE RETAINING SPRING BROKEN. EXAMINED OTHER 5 CYLINDERS. FOUND ONE MORE BROKEN SPRING AND 2 CRACKED SPRINGS. RSDR AU980348Inlet Valve · sticking(AUS) NR 2 CYLINDER INLET VALVE STICKING DUE TO CARBON BUILD-UP ON THE VALVE STEM. PUSHROD BENT. PART TC: 8,302.SDR 98ZZZX1454Gasket · leaksA SMALL OIL LEAK ON NR 3 CYLINDER WAS REPAIRED BY INSTALLING A NEW P/N 653191 ROCKER COVER GASKET. NINE HOURS LATER, A LARGE OIL LEAK WAS EVIDENT, CYLINDER NR 3. UPON PULLING COVER, FOUND GASKET HAD SHRUNK CAUSING OIL LEAK WHERE THE GASKET WENT STRAIGHT BET
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