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 CA990927062Plug · worn(CAN) NEW PISTON PLUGS, PN 72198, INSTALLED PER SI NR 1267C.Sep 8, 1999 · Piper PA28161SDR 99ZZZX3664Crankshaft · failedCOUNTERWEIGHT ON NR 3 ATTACH PORT ON CRANKSHAFT CAME OFF. CRANKSHAFT ATTACH PORTS BOTH FAILED. AIRCRAFT RETURNED TO AIRPORT AND LANDED SAFELY.Sep 8, 1999 · N252MA · Piper PA31PSDR AU990957Crankcase · cracked(AUS) CRANKCASE CRACKED ON FRONT RIGHT SIDE BELOW THE CYLINDER. CRACK LENGTH 50.8 MM (2 IN)CHES).Sep 7, 1999 · Piper PA31SDR 99ZZZX3676Camshaft · spalledFOUND FERROUS METAL IN FILTER AND SCREEN DURING OIL CHANGE. PULLED SUMP, FOUND CAMSHAFT LOBES AND LIFTERS WORN AND SPALLED.Sep 7, 1999 · N110SK · Piper PA31PSDR CA991007025Bolt · failed(CAN) NR 3 CONNECTING ROD BOLT FAILED. CAUSE UNKNOWN AT THIS TIME.Sep 3, 1999 · Piper PA31350SDR 99ZZZX3667Dowel Pin · failedREMOVED ENGINE ACCESSORY HOUSING FOR INSPECTION DUE TO ENGINE FAILURE. CRANKSHAFT GEAR (PN 61155/13519646). DOWEL PIN (P/N STD 1065) SHEARED. CRANKSHAFT GEAR RETAINER BOLT LOOSE DUE TO ENGINE TORQUE RESULTING IN COMPLETE SHUT DOWN OF CAMSHAFT AND ASSOCIATEDAug 31, 1999 · N5518U · Piper PA28140SDR AU990860Gear · mismarked(AUS) TIMING GEAR INCORRECTLY MARKED. THE TIMING MARK ON THE NEW PN OLW-10290 GEAR WAS ONE TOOTH OUT.Aug 27, 1999SDR AU990897Cylinder Stud · sheared(AUS) RIGHT ENGINE NR 2 CYLINDER ATTACHMENT STUDS (4 OFF) SHEARED.Aug 25, 1999 · Piper PA31350SDR 99ZZZX3680Bearing · failedAT CRUISE POWER SETTING, LEFT ENGINE LOST POWER. AIRCRAFT DIVERTED TO VIN. FOUND METAL IN SCREEN AND REAR VALVES NOT MOVING. SUBMITTER SUSPECTED REAR MAIN BEARING FAILURE.Aug 23, 1999 · N907Z · Doug DC3CSDR 99ZZZX3161Plug · wornFOLLOWING MAJOR OVERHAUL, ALUMINUM PARTICLES WERE FOUND IN THE OIL SCREEN AT ABOUT 30, 55, AND 75 HOURS. THE DECISION WAS MADE TO REMOVE THE CYLINDERS AND THE PISTON PIN PLUGS WERE FOUND TO BE THE SOURCE OF THE ALUMINUM. ALL PLUGS WERE WORN BEYOND SERVICE LIAug 18, 1999 · N88336 · Piper J3SDR CA990907072Crankshaft · cracked(CAN) CRACK FOUND UNDER PROP REAR CONE. CRACK IS HALF WAY AROUND THE CRANK.Aug 17, 1999SDR 99ZZZX3616Crankshaft · brokenENGINE LOCKED UP IN-FLIGHT. FOUND REAR PULLEY NOT MOVING WHEN MOVING PROPELLER. SUSPECT CRANKSHAFT BROKEN AT NR 1/NR 2 JOURNAL. AD 87-23-08 PREVIOUSLY C/W 909 HOURS AGO.Aug 17, 1999 · N91409 · Cessna A188BSDR 99ZZZX3473Crankshaft · failedENGINE SHOOK VIOLENTLY. MIXTURE CONTROL WAS PULLED BACK TO CUT-OFF IMMEDIATELY. THE ENGINE SEIZED UP. A SAFE LANDING WAS MADE. TEAR-DOWN INSPECTION REVEALED THE CRANKSHAFT HAD FAILED.Aug 17, 1999 · N1172L · Mooney M20RSDR CA990907007Crankshaft · failed(CAN) NR 2 CON ROD FAILURE DUE TO OIL STARVATION. OIL JOURNAL INTEGRITY LOOSE WHICH COULD HAVE CAUSED THE ROD BEARING FAILURE.Aug 16, 1999 · Cessna 421BSDR 99ZZZX3105Bearing · failedNR 2 AND NR 3 CYLINDERS AND CONNECTING RODS REMOVED FROM BOTH ENGINES FOR C/W TCM CSB99-3. UPON REMOVAL OF THE CONNECTING RODS, THE ROD BEARINGS (SUPERIOR PN SA630826) WERE FOUND TO HAVE LOST SIGNIFICANT AMOUNT OF BABBITT MATERIAL. THE REMAINING CYLS AND CONAug 13, 1999 · N8451N · Beech D55SDR AU990788Crankcase · cracked(AUS) RIGHT ENGINE CRANKCASE CRACKED AT THE 5 O'CLOCK POSITION ON NR 6 CYLINDER FLANGE.Aug 5, 1999 · Cessna 404CESSNASDR 99ZZZX3610Gear · failedTT: 1,443.0 HRS AIR FRAME AND ENGINE. ORIGINAL ENGINE FROM THE FACTORY, NEVER REMOVED. GEAR TOOTH FOUND DURING OIL DRAIN CHANGE, MTAL FOUND IN THE OIL FILTER. NO MOTOR OR PART FROM IN THE PREVIOUS OIL CHANGE 35 HRS PIOR. ENGINE WAS RUNNING NORMAL.Aug 1, 1999 · N4759K · Cessna P210NSDR AU990760Crankcase · cracked(AUS) ENGINE CRANKCASE CRACKED. CAMSHAFT LOBE HARDENING CRACKED. STARTER SHAFT CRACKED.Jul 27, 1999SDR CA990804012Crankshaft · damaged(CAN) AN INSPECTION REQUIRED BY CSB99-6 ON GTSIO-520-M ENGINES WAS PERFORMED AND THIS INSPECTION REVEALED A STRESS RISER CONDITION CAUSED BY A DISCREPANCY IN THE COUNTERWEIGHT BUSHING INSTALLATION PROCESS. THE ENGINE WAS REMOVED FOR FURTHER INSPECTION AND REJul 22, 1999 · Cessna 404CESSNASDR AU990858Crankcase · fretted(AUS) CRANKCASE SADDLE FRETTED AND TUNNEL MEASUREMENTS OUT OF LIMITS. COUNTERWEIGHTS ALSO UNSERVICEABLE IAW CONTINENTAL SB 93-4.Jul 22, 1999SDR CA990728093Crankcase · cracked(CAN) CRACK FOUND AT NR 5 CYLINDER CRANKCASE THREAD BORE, .750 INCH, RADIATING TO OUTER CASE.Jul 21, 1999 · Cessna 404CESSNASDR AU990719Crankcase · cracked(AUS) CRANKCASE CRACKED IN AREA BETWEEN NR 5 CYLINDER AND ALTERNATOR PAD.Jul 20, 1999SDR CA990728042Crankcase · worn(CAN) WITH THE MAGS REMOVED, MAG DRIVE IDLER WAS FOUND LOOSE. IT WAS NOTED UPON REMOVAL THAT THE CAST BOSS IN THE AFT END OF THE LEFT CRANKCASE WAS FOUND WORN TO THE POINT THAT THE BEARING FAILED AND WAS MISSING. SUBMITTER SUGGESTED NOT TO RUN ENGINE PAST TBJul 19, 1999 · Piper PA25235SDR 99ZZZX3612Bearing · failedAFTER TAKEOFF ON DEPARTURE FROM OMA, LEFT OIL TEMPERATURE INCREASED TO RED LINE AND OIL PRESSURE DROPPED TO RED LINE. AIRCRAFT RETURNED TO OMA. METAL WAS FOUND IN OIL SCREEN. SUSPECT MASTER ROD BEARING FAILURE.Jul 17, 1999 · N932H · Doug DC3CSDR AU990822Crankcase · cracked(AUS) CRANKCASE CRACKED. CAMSHAFT LOBES CRACKED.Jul 16, 1999SDR AU990686Camshaft Lobe · cracked(AUS) CRANKCASE MAIN TUNNEL DIMENSIONS OUT OF LIMITS. CAMSHAFT LOBE CRACKED.Jul 14, 1999SDR CA990907073Crankshaft · broken(CAN)CRANKSHAFT SEPARATED. CRANKSHAFT X-RAYED AT PREVIOUS OVERHAUL.Jul 11, 1999SDR 99ZZZX3143Bolt · brokenONE CONNECTING ROD BOLT BROKE ON NR 3 CYLINDER CONNECTING ROD. THE CONNECTING ROD EXITED THE ENGINE THROUGH THE TOP OF THE ENGINE CRANKCASE. THE ENGINE WAS SENT TO THE MANUFACTURER FOR METALURGY STUDY.Jul 7, 1999 · N29278 · Cessna 210LSDR 99ZZZX3065Impeller Shaft · brokenPRIOR TO DISASSEMBLY, A 'GRATING' OR 'RATCHETING' NOISE COULD BE HEARD AT A CONSTANT LOCATION DURING CRANKSHAFT ROTATION WITH THE NOSE OF THE ENGINE RACING DOWN. THE ACCESSORY CASE AND COLLECTOR CASE WERE REMOVED AS A UNIT. UPON REMOVAL, A SINGLE GEAR TOOTH Jul 6, 1999 · N7869 · Scwzer G164ASDR AU990709Lifter · faulty(AUS) HYDRAULIC VALVE LIFTERS (8OFF) FAULTY.Jul 1, 1999SDR 2000ZZZX364Crankshaft · crackedFOUND CRANKSHAFT FLANGE CRACKED (APPROXIMATELY 2.5 INCHES) ON BACK SIDE. ENGINE IS A FACTORY REBUILT WITH 48 HOURS AND NO RECORDED DAMAGE HISTORY. ENGINE INSTALLED IN REAR POSTION.Jul 1, 1999 · N2QJ · Cessna T337GSDR CA990715017Cylinder Head · cracked(CAN) ENGINE VIBRATION AND POWER LOSS WHILE GLIDER IN TOW. CRACK AROUND NR 2 CYLINDER. CYLINDER HAD BEEN OVERHAULED SUBJECT TO FREEDOM FREE PROCESS AND CERMICROME PLATING.Jun 26, 1999 · Bbavia 8GCBCSDR 99ZZZX2932Piston · failedAPPROXIMATELY 15 MINUTES AFTER TAKEOFF, THE NR 4 PISTON SEPARATED FROM ITS CONNECTING ROD. THIS CAUSED THE NR 4 CYLINDER TO FRACTURE RESULTING IN A COMPLETE LOSS OF OIL. THE ENGINE STALLED FORCING AN EMERGENCY LANDING ON A RIVER BANK. UPON LANDING, THE LEFTJun 24, 1999 · N40677 · Maule M4220CSDR 99ZZZX2730Piston · brokenTHE ENGINE WAS REMOVED FROM THE AIRCRAFT COMPLETELY DISASSEMBLED FOR OVERHAUL. THE NR 3 CYLINDER INTAKE TAPPET WAS FOUND BROKEN AT THE CAM LOBE IN 3 PIECES. THE NR 4 PISTON SKIRT HAD A LARGE PIECE BROKEN FROM THE BOTTOM OF THE SKIRT. ALL PIECES WERE FOUND IJun 19, 1999 · N39801 · Piper PA28140SDR 99ZZZX272 9Tappet · brokenTHE ENGINE WAS REMOVED FROM THE AIRCRAFT COMPLETELY DISASSEMBLED FOR OVERHAUL. THE NR 3 CYLINDER INTAKE TAPPET WAS FOUND BROKEN AT THE CAM LOBE IN 3 PIECES. THE NR 4 PISTON SKIRT HAD A LARGE PIECE BROKEN FROM THE BOTTOM OF THE SKIRT. ALL PIECES WERE FOUND IJun 19, 1999 · N39801 · Piper PA28140SDR 99ZZZX2982Pin · looseTHE IDLER GEAR SUPPORT PIN WAS FOUND LOOSE AND BACKED OUT OF THE CRANKCASE CAUSING THE IDLER GEAR TO BE OUT OF POSITION DISCONNECTING THE DRIVE TRAIN TO THE MAGNETOS WHICH CAUSED AN IMMEDIATE TOTAL LOSS OF POWER. THERE WAS ALSO EXTENSIVE DAMAGE TO THE TEETH OJun 18, 1999 · N5943M · Cessna 421BSDR AU990682Bearing · failed(AUS) CRANKSHAFT BEARING FAILED. THE BEARING FELL OUT OF THE SUMP PLUG HOLE DURING ENGINE OIL DRAIN. LIMITED INFORMATION PROVIDED.Jun 16, 1999 · Cessna 210MSDR CA990715012Crankcase · cracked(CAN) CRACK FOUND BETWEEN NR 5 AND NR 6 CYLINDERS.Jun 15, 1999 · Dhav DHC3SDR 99ZZZX2471Counterweight · looseDURING START-UP OF THE ENGINE, THE NR 1 CYLINDER TRAILING COUNTER WEIGHT ON THE CRANKSHAFT CAME LOOSE FROM CRANKSHAFT AND MADE A HOLE IN THE TOP OF THE CASE. CSB99-3A HAD BEEN COMPLETED 1.7 HOURS PRIOR. REASON FOR FAILURE UNKNOWN AT THIS TIME.Jun 7, 1999 · N7435Q · Cessna 182PSDR CA990630080Link Pin · displaced(CAN) NR 7 LINK PIN ASSY FOUND DISPLACED REARWARD JAMMING AGAINST INTERNAL CRANKCASE STRUCTURE. THE LOCK PLATE SCREW FAILED ALLOWING PIN TO MIGRATE. QUALITY CONTROL IS SUSPECTED AT OVERHAUL, LOCKWIRE RETAINING SCREW COULD NOT BE FOUND DURING INTERNAL INSPECMay 31, 1999 · Dhav DHC2MK1SDR AU990509Crankshaft · cracked(AUS) RT ENGINE CRANKSHAFT CRACKED IN THE AREA OF THE COUNTERWEIGHT BUSHING. FOUND DURING ULTRASONIC INSPECTION IAW TCM CSB99-3A AND AD/CON/79.May 28, 1999 · Cessna 402BSDR 20000714SH023Camshaft · brokenFORWARD END OF CAMSHAFT BROKE WHERE PROPELLER GOVERNOR DRIVING GEAR ATTACHES. THIS RESULTED IN LOSS OF PROPELLER GOVERNOR AND LOSS OF RPM. ENGINE WAS FEATHERED AND LANDED SAFELY. (X)May 21, 1999 · N888CA · Gulstm 500BSDR 20000713SH026Stud · brokenNR 6 CYLINDER HOLD-DOWN STUDS, 4 EACH P/N 38-13, 2 EACH P/N 38-13, WERE BROKEN CAUSING OIL LEAKS AND VIBRATION. OIL LEAK WAS DETECTED ON POST-FLIGHT. (X)May 21, 1999 · N411PT · Gulstm 500BSDR AU990568Crankshaft · cracked(AUS) CRANKSHAFT CRACKED FROM CRANK GEAR DOWEL. CRANKCASE TUNNEL MEASUREMENTS OUT OF LIMITS.May 21, 1999SDR 99ZZZX2199Plug · wornWHILE C/W LYC SI 1492B (PISTON PIN PLUG WEAR INSPECTION) AND FINDING METAL CONTAMINATION OF OIL FILTER IN EXCESS OF LIMITS CONTAINED IN SI 1492B, FOUND THE FORWARD PISTON PIN PLUG EXCESSIVELY WORN DUE TO A PISTON RING WEAR STEP IN THE NR 1 CYLINDER ON THE FORWMay 14, 1999 · N6466L · Cessna 152SDR 99ZZZX2193Plug · wornWHILE C/W LYC SI 1492B (PISTON PIN PLUG WEAR INSPECTION) AND FINDING METAL CONTAMINATION OF OIL FILTER IN EXCESS OF LIMITS CONTAINED IN SI 1492B, FOUND THE FORWARD PISTON PIN PLUG EXCESSIVELY WORN DUE TO A PISTON RING WEAR STEP IN THE NR 1 CYLINDER ON THE FORWMay 14, 1999 · N95670 · Cessna 152SDR 99ZZZX2192Plug · wornWHILE C/W LYC SI 1492B (PISTON PIN PLUG WEAR INSPECTION) AND FINDING METAL CONTAMINATION OF OIL FILTER IN EXCESS OF LIMITS CONTAINED IN SI 1492B, FOUND THE FORWARD PISTON PIN PLUG EXCESSIVELY WORN DUE TO A PISTON RING WEAR STEP IN THE NR 1 CYINDER ON THE FORWAMay 14, 1999 · N95617 · Cessna 152SDR 99ZZZX2201Plug · wornWHILE C/W LYC SI 1492B (PISTON PIN PLUG WEAR INSPECTION) AND FINDING METAL CONTAMINATION OF OIL FILTER IN EXCESS OF LIMITS CONTAINED IN SI 1492B, FOUND THE FORWARD PISTON PIN PLUG EXCESSIVELY WORN DUE TO A PISTON RING WEAR STEP IN THE NR 1 CYLINDER ON THE FORWMay 13, 1999 · N5096L · Cessna 152SDR 99ZZZX2191Plug · wornWHILE C/W LYC SI 1492B (PISTON PIN PLUG WEAR INSPECTION) AND FINDING METAL CONTAMINATION OF OIL FILTER IN EXCESS OF LIMITS CONTAINED IN SI 1492B, FOUND THE FORWARD PISTON PIN PLUG EXCESSIVELY WORN DUE TO A PISTON RING WEAR STEP IN THE NR 1 CYLINDER ON THE FORWMay 13, 1999 · N95892 · Cessna 152SDR 20000713SH011Case · crackedCRACKS IN CASE HALF AROUND NR 2 CYLINDER. FOUND DURING INSPECTION FOR OIL LEAK. (X)May 12, 1999 · N2BZ · Gulstm 500S
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