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.

SDR A3W2008F00000Piston · brokenAT OIL CHANGE, FOUND ALUMINUM CONTAMINATION IN OIL FILTER ELEMENT. INVESTIGATION FOUND BROKEN PISTON SKIRT AND RING PARTS IN OIL PAN FROM NR 4 CYLINDER. NR 4 PISTON SKIRT WAS BROKEN AT LOWEST RING, AT BOTTOM OF PISTON HALF, TOTAL SKIRT WAS BROKEN OFF THIS PIMay 27, 2008 · N121EE · Cessna A185FSDR CA080623003Seal · leaking(CAN) DURING 2 ROUTINE INSP OF THE ENGINE, IT WAS DISCOVERED THAT THE CRANKSEAL WAS LEAKING. A NEW SEAL WAS INSTALLED AT APPROXIMATLEY 50 HRS. THE NEXT SCHEDULED INSP CARRIED OUT AT 98 HRS REVEALED THE SEAL LEAKING AGAIN. THE ENGINE WAS STILL UNDER WARRENTY ANMay 14, 2008 · Piper PA31350SDR 2008FA0000318Crankshaft · crackedAC WAS FLYING AT 5000 FT, WHEN ENGINE STARTED TO LOSE POWER AND FAILED. AC LANDED SAFELY IN A FIELD. ENGINE WAS FOUND TO BE LOCKED UP. ENGINE WAS DISASSEMBLED AND COMPONENTS INSPECTED. CRANKSHAFT WAS FOUND TO HAVE CRACK, CAUSING ENGINE TO LOCK UP. PROBABLApr 22, 2008 · N4149T · Piper PA28181SDR FFKA128Stud · backed outPILOT ABORTED TAKEOFF AFTER SEEING SOME SMOKE COMING FROM THE LEFT ENGINE NACELLE. AFTER INVESTIGATION IT WAS FOUND THAT A STUD HAD BACKED OFF AND FELL OFF THE ENGINE ALLOWING ENGINE OIL TO COME OUT OF THE HOLE AND DRIP ONTO THE EXHAUST PIPES.Mar 31, 2008 · N7351R · Beech 58SDR 2008FA0000261Bushing · brokenRECEIVED ENGINE IN AFTER 32.2 HOURS SINCE MAJOR OVERHAUL. ENGINE WAS DAMAGED BY COUNTERWEIGHT FAILURE ON CRANKSHAFT. DAMAGED TO THE CRANKCASE, CYLINDERS AND ROD WAS FROM WHAT APPEARED TO BE A BROKEN COUNTERWEIGHT PIN OR FAILURE OF THE COUNTERWEIGHT BUSHING. Mar 17, 2008SDR 2008FA0000240Bolt · failedNR 1 ENGINE SHUTDOWN IN FLIGHT. SUSPECTED NR 7 CONNECTING ROD BOLT FAILURE. CAUSING CYL SEPARATION FROM CASE AND CRANK CASE CRACK. AC LANDED SAFELY WITHOUT OTHER DAMAGE. (K)Mar 7, 2008 · N103BA · Beech 65B80SDR 2008FA0000151Crankshaft · crackedCRANKSHAFT HAS VERY LARGE RADIAL CRACKS AT THE BASE OF THE FORWARD THRUST FACE, EXTENDING APPROX. 85% OF THE WAY AROUND THE SHAFT. APPEARS TO HAVE BEEN A FRONTAL IMPACT ON THE CRANKSHAFT DRIVING IT REWARD IN THE ENGINE AND IMPACTING THE CRANKCASE.Mar 5, 2008SDR CA080317005Piston Pin · worn(CAN) ALUMINUM FOUND IN OIL FILTER DURING 100 HOUR INSP. CYLINDER BOROSCOPED, SUSPECT CYLINDER REMOVED, FWD PISTON PIN FOUND WORN ON NR 1 CYLINDER. (TC NR 20080317005)Mar 4, 2008 · Cessna 152SDR 2008FA0000380Engine · malfunctionedOH ENGINE AND RETURNED TO SERVICE APROX (2) YEARS AGO, 600 HOURS OPERATION. ENGINE FAILED WHEN POWER WAS REDUCED ON LANDING. THE COUNTERWEIGHT MANAGED TO HOOK ON THE CYLINDER DECK STUD AND DRAG IT INTO THE CASE, GETTING INVOLVED WITH THE ROTATING COMPONENTS. Mar 3, 2008SDR CA080403009Main Bearing · brokenDURING INSPECTION METAL PIECES FOUND IN ENGINE SUMP. INVESTIGATION DETERMINED THEM TO BE PART OF FLANGE OF MASTER ROD BEARING. ENGINE REMOVED FOR OVERHAUL.Jan 16, 2008 · Dhav DHC2MKISDR 5AM2008F00000Connecting Rod · brokenCONNECTING ROD ON NR5 PISTON BROKE APART, PUNCTURING A HOLE IN THE LT ENGINE CASE HALF. PILOT SECURED THE ENGINE AND MADE A SINGLE ENGINE LANDING AT THE AIRPORT WITHOUT INCIDENT. NO INJURIES TO PASSENGERS OR CREW. ENGINE WAS WITHIN TBO AND IN COMPLIANCE WITJan 16, 2008 · N830SASDR JIK2008F00000Dowel Pin · shearedON TAKEOFF ROLL, THE RT ENGINE QUIT. AFTER TROUBLESHOOTING, AND CHANGING MAGS, THE ENGINE STILL ONLY RAN ROUGH, AT BEST. THE ENGINE WAS REPLACED AND SENT BACK TO OVERHAUL FACILITY. AT TEAR DOWN IT WAS FOUND THAT THE DOWEL THAT ALIGNS THE CRANKSHAFT GEAR TO Jan 15, 2008 · N42079 · Piper PA31350SDR CA080116023Crankcase · cracked(CAN) DURING SCHEDULED NR 1 EVENT INSPECTION, AME FOUND LT ENGINE, NR 5 CYL DIFFERENTIAL PRESSURE TEST VERY LOW. NR 5 CYL REMOVED FOR DETAILED INSP AND POSSIBLE REPLACEMENT. UPON FURTHER INSP MAINT FOUND AN APPROX 4 INCH CRACK, STARTING FROM NR 5 CYL LOWER FWJan 11, 2008 · Piper PA31350SDR 2008FA0000044Pushrod · corrodedTHE AREA IN WHICH THE CORRODED SECTION OF THE PUSHROD ASSY IS LOCATED IS PRONE TO EXHAUST CONTAMINATION SINCE IT IS DIRECTLY BEHIND THE ENGINE EXHAUST PIPE OUTLETS. THIS AREA NEEDS TO BE KEPT CLEAN OF EXHAUST RESIDUE AND CORROSION PREVENTATIVE APPLIED. OLDERJan 11, 2008 · N25RH · Piper PA60601PSDR 2008FA0000043Pushrod · corrodedTHE AREA IN WHICH THE CORRODED SECTION OF THE PUSHROD ASSY IS LOCATED IS PRONE TO EXHAUST CONTAMINATION SINCE IT IS DIRECTLY BEHIND THE ENGINE EXHAUST PIPE OUTLETS. AREA NEEDS TO BE KEPT CLEAN OF EXHAUST RESIDUE AND CORROSION PREVENTATIVE APPLIED. OLDER TUBEJan 11, 2008 · N700LG · Piper PA60602PSDR 2008FA0000097Crankshaft · brokenCRANKSHAFT BROKE JUST AFT OF PROPELLER MOUNTNG FLANGE. (K)Dec 26, 2007 · N47BC · Piper PA46310PSDR 2007FA0001111Thru Bolt · brokenINSTALLING ALL NEW SA641931-10.75 LOT NR K070059179, REV E THRU BOLTS IN ENGINE. AFTER TORQUE, WITHIN A FEW HOURS THE THRU BOLT SNAPPED, AT THE OIL RING GROOVE. THIS IS THE THIRD THRU BOLT THAT HAS SNAPPED AFTER TORQUE, AND SETTING. PROBABLE CAUSE, IS IMPRODec 17, 2007SDR FFKA123Piston · burnedPILOT REPORTED A LOSS OF POWER ON THE RT ENGINE AND DECLARED AN EMERGENCY. MAINTENANCE PERFORMED A COMPRESSION CHECK ON THE CYLINDERS AND FOUND ZERO PRESSURE ON (1) OF THE CYLINDERS. UPON REPLACEMENT OF CYLINDER IT WAS FOUND THAT THE PISTON HAD A (HOLE) DOWDec 17, 2007 · N553DM · Piper PA34200TSDR FFKA122Connecting Rod · brokenPILOT REPORTED A LOSS OF POWER AND DECLARED AN EMERGENCY. MAINTENANCE INVESTIGATED THE LT ENGINE AND FOUND A HOLE IN THE CASE HALF AT THE BASE OF THE NR 6 CYLINDER. THEY ALSO FOUND THE CONNECTING ROD IN 2 PIECES THE CONNECTING ROD CAP ALMOST FLATTENED AND BODec 14, 2007 · N401NA · Cessna 402BSDR CHI08CA035Nut · backed outNR 3 PISTON CONNECTING ROD SEPARATED FROM THE CRANKSHAFT. PISTON SHEARED MOUNTING STUDS OF CYLINDER HOUSING AT ENGINE CASING. CYLINDER HOUSING SEPARATED FROM ENGINE CASING. ENGINE SHUTDOWN.Nov 1, 2007 · N5912Q · Mooney M20ESDR 2007FA0000932Camshaft · spalled556 HOURS SINCE MAJOR OVERHAUL, CAMSHAFT AND LIFTERS SPALLED AND CORROSION IS EVIDENT. ENGINE HAS BEEN OPERATED ON PHILLIPS XC 20W50 OIL.Oct 18, 2007 · N6956Q · Beech A2324SDR CA071022002Idler Gear · worn(CAN) DURING A SCHEDULED INSP OF THE ENGINE, THE OIL FILTER WAS REMOVED AND DISASSEMBLED. IT WAS NOTED THAT THE FILTER MEDIA CONTAINED AN ABNORMAL AMOUNT OF METAL. THE AIRCRAFT WAS FLOWN AN ADDITIONAL 10 HRS AND THE FILTER WAS AGAIN INSPECTED. UPON INSPECTION Oct 9, 2007 · Piper PA31350SDR CA071109004Crankcase · cracked(CAN) DURING RUNUP AFTER INSPECTION, INVESTIGATION OF A MINOR OIL LEAK REVEALED THAT THE ENGINE CRANKCASE WAS CRACKED NEAR AN ENGINE THROUGHBOLT AT THE BASE OF NR 2 CYLINDER, BETWEEN CYLS NR 2 AND NR 3. THE ENGINE WAS REPLACED. (TC NR 20071109004)Oct 5, 2007 · Dhav DHC2MKISDR ZB0R20070004Cam · wornON CLIMB-OUT, PILOT NOTICED LOW POWER. RETURNED TO AIRPORT. MAINTENANCE INSPECTION REVEALED BELOW MINIMUM VALVE TRAVELS FOR ALL INTAKE VALVES. REMOVED NR 1 CYLINDER. FOUND CAM LOBES SEVERELY WORN AND TAPPETS CORRODED AND WORN IN A CONCAVE MANNER. ENGINE REPASep 15, 2007 · N41331 · Piper PA28R200SDR CA070912003Gear · damaged(CAN) PILOT/OPERATOR CONVEYED A STARTING ABNORMALITY. TROUBLESHOOTING FOUND THAT TWO TEETH WERE MISSING FROM CRANKSHAFT GEAR. ENGINE REMOVED AND SENT FOR FURTHER EVALUATION AT ATC AMO NR 59-96. SEE SDR NR 20070912001 FROM AMO 59-96 FOR FURTHRER FOLLOW UP. (TCAug 30, 2007 · Cessna U206GSDR CA070831005Pin · loose(CAN) CREW ATTEMPTED TO CHECK FOR HYDRAULIC LOCK PRIOR TO START, AND WAS UNABLE TO TURN THE ENGINE MORE THAN 180 DEGREES. THROUGH DIAGNOSIS AND DISCUSSION WITH ENGINE OVERHAUL FACILITY, IT WAS ELECTED TO REMOVE A CYLINDER AND CONFIRM THE INTEGRITY OF THE MASTEAug 29, 2007 · Beech D18SSDR CA070912001Gear · failed(CAN) WHILE TROUBLESHOOTING A STARTER PROBLEM. THE CRANKSHAFT GEAR WAS FOUND TO BE MISSING 2 TEETH. ENGINE WAS DISASSEMBLED, INSPECTED AND REPAIRED AS NECESSARY. PART OF THE MAGNETO IMPULSE CAM BROKE OFF, FELL DOWN INTO THE CRANK AND CAMSHAFT GEARS. THE GEARS Aug 27, 2007SDR 2007FA0000781Crankshaft · failedCRANKSHAFT FAILED NDI SB MSB96-10. (K)Aug 10, 2007SDR 2007FA0000789Crankshaft · destroyedDURING LEVEL FLIGHT THIS AIRCRAFT SUSTAINED LOSS OF PROPELLER. AIRCRAFT LANDED ON A COUNTY HIGHWAY SATISFACTORILY WITH NO DAMAGE OR INJURIES. INVESTIGATION REVEALED THE ENGINE CRANKSHAFT FAILED IMMEDIATELY AFT OF THE PROPELLER ATTACH POINT (THIS CRANKSHAFT HAug 9, 2007SDR 2007FA0000729Bushing · misinstalledDURING THE PROCESS OF INSPECTING (6 EA) CONNECTING RODS IAW SB 07-1 AND SB 00-3, IT WAS FOUND THAT ALL WRIST PIN BUSHINGS WERE INSTALLED NOT IAW THEIR POSITIONS AS REQUIRED IN THE APPLICABLE SB AS REFERENCED. SPLIT LINE OF BUSHING ON WRONG SIDE OF CENTERLINE.Aug 3, 2007 · N19WE · Piper PA34220TSDR CA070813001Piston · cracked(CAN) THE PILOT MADE A PRECAUTIONARY LANDING WHEN HE NOTICED OIL DROPS ON THE WINDSHIELD AND SAW SOME SMOKE COMING OUT FROM THE REAR OF THE COWLING. THE ENGINE WAS INSPECTED TO DETERMINE THE CAUSE OF THE OIL LEAK. A DIFFERENTIAL COMPRESSION SHOWED THAT THE NR Jul 27, 2007 · Dhav DHC2MKISDR CA070725006Crankcase · damaged(CAN) OVERHAULED CYLINDER ASSY`S WERE INSTALLED APPROX 500 HRS AGO ONTO A FRETTED CRANKCASE. THE CENTER MAIN BEARING THEN SPUN IN THE BEARING SADDLE. METAL WAS DETECTED IN THE OIL SCREEN AND THE ENGINE WAS SUBSEQUENTLY TORN DOWN FOR OVERHAUL. THE CRANKCASE Jul 25, 2007SDR 2007FA0000647Piston · crackedPISTON SKIRT CRACKED ON 2 CYLINDERS.Jul 20, 2007 · N20858 · Cessna 172MSDR CA070813003Piston · worn(CAN) TOP RING BROKEN. ALL CYLINDERS REPLACED WITH NEW CYLINDER, PISTONS RINGS VALVES. COMPRESSION TEST AT INSPECTION ON MIN - 60 OVER 80. (TC NR 20070813003)Jul 19, 2007 · Cessna 150HSDR CA070729002Counterweight · separated(CAN) AIRCRAFT WAS IN CRUISE, ALL SYSTEMS NORMAL WHEN A VIOLENT VIBRATION HAPPENED IN THE LT ENGINE. ENGINE SEIZED DURING SHUTDOWN/FEATHER PROCESS AND FEATHERING WAS UNAVAILABLE. A SAFE LANDING WAS MADE ON A LAKE. INVESTIGATION REVEALED NR 1 CYLINDER COMPLETEJul 12, 2007 · Beech D18SSDR 2007FA0000684Crankshaft · corrodedFOUND CRANKSHAFT TO BE PITTED, LAST INSPECTION WAS DONE BY MFG (4) YEARS AGO. THIS ENGINE HAD HIGH UTILIZATION AND FREQUENT OIL CHANGES. (K)Jul 12, 2007 · N175AF · Cessna 172RSDR 2007FA0000637Piston · fracturedAFTER INSTALLING NEW CYLINDER ASSY SA47006S-A20P WITH NEW PISTON ASSY PN SA640518, WE WERE PERFORMING BREAK IN RUN AT LOW POWER, FIRST AT 800 RPM FOR 2 MIN. SHUTDOWN ENGINE, CLEANED FOULED PLUGS DUE TO OIL IN CYLINDER FROM ASSY. RAN ENGINE AT 1000 RPM FOR 3 Jun 13, 2007 · N1858X · Cessna 182HSDR 2007FA0000501Main Bearing · delaminatedCUSTOMER FOUND METAL IN FILTER DURING ROUTINE MAINTENANCE. TOOK ENG. APART AND FOUND 2 CENTER MAIN BRGS. WHERE DELAMINATED.Jun 7, 2007 · Piper PA31350SDR CA070618002Crankshaft · corroded(CAN) ENGINE CONVERTED TO 160 HP IAW STC SE367CH. ENGINE NOW SIMILAR TO O-320-D2A. CRANKSHAFT INSPECTED IAW AD 98-02-08. PITTED FOUND, NO CRACKS. (TC NR 20070618002)Jun 6, 2007 · Piper PA28140SDR CA070605003Main Bearing · failed(CAN) MAIN BEARING FAILED DUE TO EXCESSIVE TSO. CRANKCASE DAMAGED BEYOND REPAIR. VERY CLOSE TO HAVING A COMPLETE ENGINE FAILURE. (TC NR 20070605003)Jun 1, 2007 · Piper PA44180SDR BOO2007F00001Gear · wornCRANK SHAFT GEAR FAILURE. GEAR TEETH WORN OUT (.5) WIDTH CAUSED ENGINE FAILURE WHEN DRIVEN GEAR LOST CONTACT. (K)May 31, 2007 · N827TS · Beech 58SDR BOO2007F00000Gear · wornCRANKSHAFT GEAR FAILURE. GEAR TEETH WORN OUT .5 WIDTH, CAUSED ENGINE FAILURE WHEN DRIVEN GEAR LOST CONTACT. (K)May 31, 2007 · N827TS · Beech 58SDR 2007FA0000490Crankshaft · crackedCRANKSHAFT HAD A VERY LARGE, DEEP FORGING LAP ON THE NR 3 CRANK CHEEK. AN EFFORT WAS MADE TO REMOVE THE LAP BY LOCALIZED GRINDING BUT THE IT WAS TOO DEEP TO REMOVE. CRANKSHAFT WAS DETERMINED UNAIRWORTHY BY ENGINEERING.May 25, 2007SDR FFKA118Crankshaft · crackedPILOT REPORTED AN OIL LEAK COMING FROM THE LEFT (NR 1) ENGINE AFTER FINISHING THEIR FLIGHT FOR THE DAY. MAINTENANCE INVESTIGATED THE OIL LEAK AND FOUND THE CRANKSHAFT CRACKED AROUND THE CIRCUMFERENCE OF THE PROPELLER FLANGE. WHEN MAINTENANCE STARTED TO REMOVMay 17, 2007 · N6935C · Piper PA34200TSDR CA070529006Connecting Rod · destroyed(CAN) DURING FLIGHT, THE ENGINE BEGAN TO RUN ROUGH. THE AIRCRAFT MADE AN UNSHEDULED LANDING FOR INSPECTION. THE CRANKCASE WAS FOUND CRACKED AT THE NR 2 CYLINDER. THE ENGINE WAS REMOVED FROM THE AIRCRAFT. (TC NR 20070529006)May 7, 2007 · Cessna A185FSDR CA070522003Camshaft · spalled(CAN) IN REMOVING NR 1 CYLINDER TO BE CHANGED OUT THE LIFTERS WERE REMOVED TO BE BLEED DOWN, LIFTERS WERE SPAWLED. THE AME INSPECTED THE CAM AND THE EXHAUST LOBE WAS ALSO SPALLED. THE ENGINE WAS REMOVED AND PREPARED FOR SHIPMENT TO A REPAIR SHOP. UNDER FURTHERMay 7, 2007 · Cessna 180KSDR CA070511008Crankcase · cracked(CAN) SUDDEN DROP OF OIL PRESSURE DURING FLIGHT TO THE BOTTOM OF THE GREEN ON OIL PRESSURE GAUGE. CONTINUED FLIGHT WITH SAFE LANDING. CRACK NOT FOUND BY NDT. BOTTOM END REBEARINGED, BUT ENGINE OIL PRESSURE WOULD DROP ONCE WARMED UP (POST REPAIR). FURTHER NDT May 2, 2007 · Cessna T303SDR CA070503006Seal · leaking(CAN) RECEIVED ENGINE, AFTER A REPAIR FOR PREMATURE CAMSHAFT FAILURE (REF: SDR 20070319008). AFTER INSTALLATION AND RUN-UPS, AN OIL LEAK WAS DISCOVERED AT THE CRANKSHAFT SEAL. WHEN THE SEAL WAS REMOVED IT WAS NOTED THAT IT WAS A (SPLIT) TYPE SEAL NOT THE ONE-Apr 26, 2007 · Piper PA31350SDR 2007FA0000342Connecting Rod · failedDURING CLIMB AFTER THE POWER HAD BEEN REDUCED FROM THE TAKEOFF SETTING, THE RT ENGINE STARTED TO VIBRATE. THE PILOT COULD SEE OIL SPLASHING FROM AROUND THE OIL ACCESS DOOR AND RUNNING BACK ON THE TOP COWLING. THE PILOT SHUTDOWN THE ENGINE AND FEATHERED THE RApr 21, 2007 · N8FB · Cessna 402BSDR CA070420002Bolt · failed(CAN) BOLT FAILED CAUSING CONNECTING ROD TO BECAME DETACHED FROM CRANKSHAFT CAUSING MAJOR DAMAGE TO LOWER END OF ENGINE. (TC NR 20070420002)Apr 17, 2007
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