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 WVBA2001015Camshaft · damagedDURING INSPECTION METAL CONTAMINATION WAS DISCOVERED IN THE OIL FILTER. A CHECK OF VALVELIFT WAS DONE AND IT WAS DISCOVERED THAT NR5 AND NR6 INTAKE LOBES WERE EXCESSIVE. NR6 CYLINDER WAS REMOVED AND DAMAGE OBSERVED ON THE CAM LOBES AND TAPPET FOLLOWERS. NFeb 26, 2001 · N59764 · Piper PA31350SDR 20010403CW012Rod · departedAIRCRAFT ARRIVED WITH RIGHT ENGINE OIL LEAK. FOUND OIL LINE TO BE LEAKING. REPAIRED OIL LINE AND SERVICED BACK UP WITH OIL. ENGINE WAS RERUN AND A ROD CAME LOOSE AND PENETRATED THE CRANKCASE. NO OTHER INFORMATION WAS RECEIVED, EXCEPT THAT THE ENGINE RAN OUFeb 24, 2001 · N5988M · Cessna 421BSDR 2001FA0000410Seal · blew outENGINE CRANKCASE BREATHER HOSE MAY HAVE ICED UP CAUSING CRANKCASE PRESSURE TO BUILDUP, BLOWING CRANKSHAFT SEAL OUT OF CRANKCASE. ALL ENGINE SEIZED UP AND QUIT. PILOT MADE AND EMERGENCY LANDING, NO DAMAGE TO AIRCRAFT.Feb 23, 2001 · N93RF · Amtr LONGEZSDR AU010220Collar · mismanufactured(AUS) LT ENGINE CRANKSHAFT OIL TRANSFER COLLAR HAD INCORRECT CLEARANCE. THE MEASURED CLEARANCE WAS 0.0254MM (0.001IN) WITH THE CORRECTMANUFACTURERS LIMITS BEING 0.127MM TO 0.4572MM (0.005IN TO0.0018IN).Feb 23, 2001 · Cessna 310RSDR 20010323CW019Crankshaft · crackedSUBJECT CRANKSHAFT HAS A 1.5 INCH CRACK IN NR6 ROD JOURNAL AT A 45 DEGREE ANGLE. ENGINE WAS REBUILT PRIOR TO MSB005C APPLICABILITY. CRANKSHAFT NOT APPLICABLE PER SN.Feb 23, 2001SDR 20010322CW006Camshaft · failedENGINE FAILED ON TAKE OFF, AIRCRAFT WAS AIRBORN. OWNER WAS ABLE TO MAKE A SAFE LANDING. FOUND ENGINE TO HAVE NO COMPRESSION. REMOVED ROCKER BOX COVERS, FOUND ONLY ONE EXHAUST VALVE WOULD MOVE ON NR1 CYLINDER. CAMSHAFT BROKE BETWEEN EXHAUST AND INTAKE ON NRFeb 22, 2001 · N9777C · Cessna T303SDR WVBA2001013Camshaft · damagedDURING INSPECTION METAL CONTAMINATION WAS DISCOVERED IN OIL FILTER. A CHECK OF VALVE LIFT WAS DONE AND IT WAS DISCOVERED THAT NR5 AND NR6 INTAKE LOBES WERE EXCESSIVE. NR6 CYLINDER WAS REMOVED AND DAMAGE OBSERVED ON THE CAM LOBES AND TAPPET FOLLOWERS. NOTE: Feb 21, 2001 · N300ED · Piper PA31350SDR AU010180Crankcase · cracked(AUS) ENGINE IN AN EXTREMELY POOR CONDITION. DEFECTS INCLUDE CRACKED CRANKCASE, WORN CRANKSHAFT, WORN GEARS, WORN CYLINDERS AND VALVES.Feb 20, 2001 · Cessna 172BSDR 20010320CW004Bracket · corrodedTHESE BRACKETS ARE MADE OF MAGNESIUM AND ARE CORRODING SEVERELY AND CRACKING AT THE MOUNTING FEET AND THE MAIN BEARING BOSS. SUGGEST DYE PENETRANT CHECK WITH PAINT REMOVED, AT EACH ANNUAL INSPECTION. REPLACE WITH AIRWORTHY BRACKETS OR STC ALUMINUM BRACKETS.Feb 20, 2001 · N195JA · Cessna 190SDR WVBA2001011Camshaft · damagedDURING INSPECTION, METAL CONTAMINATION WAS DISCOVERED IN OIL FILTER. A CHECK OF VALVELIFT WAS DONE AND IT WAS DISCOVERED THAT NR5 AND NR6 INTAKE LOBES WERE EXCESSIVE. NR 6 CYLINDER WAS REMOVED AND DAMAGE OBSERVED ON THE CAM LOBES AND TAPPET FOLLOWERS. NOTE:Feb 20, 2001 · N792FC · Piper PA31350SDR WVBA2001010Camshaft · damagedDURING INSPECTION, METAL CONTAMINATION WAS DISCOVERED IN OIL FILTER. A CHECK OF VALVELIFT WAS DONE AND IT WAS DISCOVERED THAT NR5 AND NR6 INTAKE LOBES WERE EXCESSIVE. NR6 CYLINDER WAS REMOVED AND DAMAGE OBSERVED ON THE CAM LOBES AND TAPPET FOLLOWERS. NOTE:Feb 19, 2001 · N4082T · Piper PA31350SDR 20010320CW003Main Bearing · making metalWHILE PERFORMING A 100 HOUR ENGINE INSPECTION, LARGE METAL PRATICALS WHERE FOUND IN THE OIL SUCTION SCREEN. ALSO, AN EXCESSIVE AMOUNT OF METAL FOUND IN THE ENGINE OIL FILTER. SAMPLES OF METAL SENT FOR TESTING. DETERMINED METAL PARTICALS TO BE CRANK AND OR RFeb 16, 2001 · N3581C · Piper PA31350SDR 20010323CW013Bolt · missingDURING OIL PUMP AD COMPLIANCE, FOUND BOLT HEAD MISSING FROM IDLER SHAFT MOUNT. THIS IDLER SYSTEM IS BETWEEN CAM AND CRANKSHAFT. IF THIS FAILS ENGINE WILL STOP. THERE WERE NO SQUAKS ON THIS ENGINE FAILURE WAS IMMANENT WITH NO PRIOR INDICATION. PROBABLE CAUSFeb 12, 2001 · N7146R · Piper PA28140SDR NX4200440Main Bearing · defectiveDURING ENGINE DISASSEMBLY FOR ROUTINE OVERHAUL IT WAS NOTED THAT SOME NR 2 MAIN BEARING SURFACE MATERIAL HAD RELEASED FROM THE BEARING SHELL.Feb 7, 2001SDR NX4200420Bearing · defectiveDURING ENGINE DISASSEMBLY FOR ROUTINE OVERHAUL IT WAS NOTED THAT SOME NR 3 MAIN BEARING SURFACE MATERIAL HAD RELEASED FROM THE BEARING SHELL.Feb 7, 2001SDR 2001F00062Drive Gear · failedENG HAD STARTER DRIVE FAILURE. INVESTIGATION, STARTER DRIVE HAD BEEN SWITCHED 5 TIMES IN 300 HRS. FOUND OIL GALLEY TO STARTER DRIVE PLUGGED. SPLIT CRANKCASE, FOUND OIL GALLEY FROM REAR CAMSHAFT BRG SURFACE TO STARTER DRIVE BRG PLUGGED. THE PLUG WAS NOT INFeb 2, 2001 · N4456W · Beech A36SDR 2001FA0000167Main Bearing · delaminatedDURING SCHEDULED OIL AND FILTER CHANGE ON ENGINE REFERENCED, FOUND BEARING PARTICLES WITHIN OIL FILTER. DISASSEMBLED ENGINE TO FIND FRONT MAIN BEARING EXHIBITING DELAMINATION OF THE LINER SURFACE. FAULTY MANUFACTURING OF BEARING IS SUSPECT.Feb 1, 2001 · N694BK · Cessna A185ESDR 20010228CW003Crankcase · crackedDURING ANNUAL INSP, OIL LEAK NOTED AT TOP OF CRANKCASE, CLEANING AND RERUN, OIL LEAK RETURNED. FOUND 1.25 IN CRACK EXTENDING FROM TOP CENTER CASE BOLT HOLE AT AREA WHERE FUEL FLOW DIVIDER BRACKET ATTACHES. CRACK IN NON-CRITICAL AREA AND WITHIN CRACK LIMITATIFeb 1, 2001 · N9748R · Beech M35SDR 20010228CW002Crankcase · crackedDURING ANNUAL INSPECTION, OIL LEAK NOTED AT CRANKCASE AREA FORWARD OF NR2 CYLINDER. AFTER CLEANING AN OBVIOUS 1.5 IN CRACK WAS NOTED. ENGINE WAS REMOVED FOR REPAIRS. LT ENGINE TSMOH 1098.41, 1992 FIREWALL FORWARD, INC.Feb 1, 2001 · N87CW · Piper PA30SDR 20010323CW008Crankcase · leakingNR 2 CYLINDER BASE DEVELOPED OIL LEAK AND ENGINE WAS SHUT DOWN. ONE CYLINDER BASE STUD WAS BROKEN AND 5 OTHERS, THE NUTS BACKED OFF DUE TOTHE STUDS LOOSENING IN THE CASE. THE STUDES WOULD NOT TIGHTEN INTO CASE DUE TO WHAT SEEMS SOFT CRANKCASE MATERIAL.Jan 30, 2001 · N516DT · Gulstm 500BSDR 20010301CW001Shaft · damagedROUGH GRIND FINISH CAUSED ALMOST ALL 8 ROCKER ARM BUSHINGS TO WEAR AND CONTAMINATE OIL WITH BRASS, METAL PARTICLES. BUSHINGS AND ROCKER SHAFTS WERE DEFECTIVE FROM WEAR AND WERE REPLACED.Jan 26, 2001 · N70847 · Cessna 177ASDR AU010055Connecting Rod · failed(AUS) LT ENGINE NR 5 CYLINDER CONNECTING ROD SEPARATED FROM CRANKSHAFT AND PENETRATED THE CRANKCASE.Jan 25, 2001 · Cessna 404CESSNASDR WVBA2001006Camshaft · damagedDURING VALVE CLEARANCE CHECK, INTAKE VALVE 3 AND 4 EXHIBITED EXCESSIVE LIFT. NR 4 CYLINDER WAS REMOVED AND DAMAGE OBSERVED ON 3 AND 4 INTAKE LOBES OF CAMSHAFT AND TAPET BODIES. ENGINE WAS REMOVED FROM SERVICE.Jan 25, 2001 · N3582P · Piper PA31350SDR 20010124CW007Bearing · failedBEARING FAILURE ON NR2 MAIN BEARING. CAUSED DAMAGE TO CRANKCASE, OIL PRESSURE DROPPED 20 PSI IN FLIGHT WITH NO OTHER INDICATION.Jan 24, 2001 · N9283R · Cessna 180BSDR AU010149Crankcase · cracked(AUS) CRANKCASE CRACKED IN NUMEROUS PLACES. INSPECTION FOUND EXCESSIVE FRETTING ON THE SECOND AND THIRD MAIN BEARING SADDLE FACES WHEN VIEWED FROM THE REAR. LOCTITE OR SIMILAR WAS FOUND ON THE BEARING SADDLE FACES. THE MAIN THROUGH BOLTS WERE OF THE OLDER SIX Jan 23, 2001 · Cessna 210NSDR 20010305CW003Bearing · deterioratedAFTER TAKEOFF, CLIMBING THROUGH 2,200 FT CREW NOTICED OIL TEMPERATURE RISING AND OIL PRESSURE DECREASING. ENGINE SHUTDOWN/FEATHERED, RETURNED TO AIRPORT. INSPECTION REVEALED BEARING MATERIAL IN OIL SCREENS. ENGINE REMOVED FROM SERVICE FOR REPAIRS.Jan 22, 2001 · N145GT · Cvac C131DSDR AUS20010434Link Rod · broken(AUS) NR 9 CYLINDER LINKROD BROKEN. SEVERE INTERNAL DAMAGE PREVENTED ESTABLISHING THE CAUSE OF THE FAILURE.Jan 3, 2001 · Dhav DHC2MK1SDR CA001229005Crankshaft · broken(CAN) DURING FLIGHT CRANK BROKE IN HALF.Dec 29, 2000 · Cessna A185ESDR CA010302009Camshaft · worn(CAN) DURING A ROUTINE INSPECTION OF THE AIRCRAFT AND ENGINE METAL PARTICLES FOUND IN BOTH OIL AND OIL FILTER. ENGINE REMOVED AND SENT FOR OVERHAUL. STRIP REPORT FROM OVERHAUL SHOP INDICATES CAMSHAFT LOBES WORN. ENGINE WAS OVERHAULED, RE-INSTALLED AND AIRCRAFTDec 24, 2000 · Piper PA31SDR NACA200000027Actuator · malfunctionedDISCREPANCIES: FEATHERED NR 1 ENGINE AT 2033Z FOR EXCESSIVE OIL TEMP, UNABLE TO CONTROL COOLER DOOR. CORRECTIVE ACTION: REPLACED OIL COOLER DOOR ACTUATOR.Dec 23, 2000 · N99330 · Doug DC6ASDR 20010124CW012Crankshaft · brokenCRANKSHAFT BROKEN IN FRONT OF NR1 ROD JOURNAL. LESS THAN 100 HOURS SINCE OVERHAUL.ATTACHED PICTURES WITH ORIGINALDec 22, 2000 · N414WE · Cessna 414ASDR 20001222SH012Gear · spalledDURING INSP C/W AD 91-14-22 AND LYC SB 475 REV A, NO DAMAGE FOUND TO CRANKSHAFT COUNTERBORE RECESS, ALIGNMENT DOWEL, RETAINING BOLTS AND THREADS. UPON INSP OF CRANKSHAFT GEAR TEETH, SEVERAL WERE FOUND TO HAVE LINEAR PTTING WHICH APPEARED TO BE CAUSED BY PLATIDec 22, 2000 · N7273Q · Cessna 206HSDR 20001229SH008Bearing · delaminatedENGINE WAS DISASSEMBLED FOR PROPELLER STRIKE INSPECTION, FOUND NR 6 ROD BEARING SURFACE MATERIAL DELAMINATING FROM BEARING EXPOSING BABBITT MATERIAL AND REMAINING BEARINGS SHOWING SIGNS OF THIS CONDITION FORMING ON THEM. ALL BEARINGS WERE SENT TO TELEDYNE CONDec 18, 2000 · N349Y · Beech 95A55SDR 20010409CW017Exhaust Valve · brokenAIRCRAFT ARRIVED WITH A ROUGH ENGINE. OPERATIONAL CHECK OF ENGINE REVEALED DANAGE IN NR 2 CYLINDER. FOUND THAT EXHAUST VALVE HAD BROKEN AND DESTROYED PISTON ALSO. ENGINE HAD 1122.7 TIME SINCE OVERHAUL. PREVIOUS COMPRESSION CHECK SHOULD HAVE REVEALED ANDec 12, 2000 · N3922Q · Cessna 172LSDR 20010207CW003Stud · brokenDURING REPAIR OF MAJOR OIL LEAK ON LT ENGINE, FOUND NR1 CYLINDER HAD 3 BROKEN STUDS AND ALL BUT 2 OF THE REMAINING HOLD DOWN NUTS HAD BACKED OFF. CYLINDER ASSEMBLY WOULD HAVE SOON LEFT THE CRANKCASE. 3 STUDS WERE REPLACED AND ALL CLYINDER HOLD DOWNS RE-TORQUDec 12, 2000 · N4048P · Piper PA23160SDR 20001227SH034Camshaft · damagedCYLINDERS 2 AND 4 REMOVED DUE TO LOW COMPRESSION. AT THIS TIME, THE CAMSHAFT WAS FOUND SEVERELY PITTED, ONE LOBE WAS FLAT. LIFTER BODIES WERE ALSO PITTED. 1,317.0 HOURS, TOTAL TIME. (X)Dec 11, 2000 · N26993 · Amrgen AA5ASDR 20010208CW002Engine · leakingIN ROUTE FROM RYV TO RDV, RT ENGINE STARTED LEAKING OIL OUT OF THE CRANKCASE BREATHER. DIVERTED TO FWA. SUSPECT SCAVAGE PUMP NOT OPERATED CORRECTLY.Dec 8, 2000 · N932H · Doug DC3CSDR CA001229013Camshaft · worn(CAN) PILOTS REPORTED LOW FUEL FLOW ON RIGHT ENGINE.THE RIGHT ENGINE WAS INSPECTED AND ONE CAMSHAFT LOBE WAS FOUND DEFECTIVE.Dec 5, 2000 · Piper PA31350SDR CA010110017Bearing · making metal(CAN) DURING A SCHEDULED OIL/FILTER CHANGE, METAL PARTICLES WERE FOUND IN THE ENGINE OIL SCREEN. IN REFERENCE TO PIPER VSP-127 AND TEXTRON LYCOMINGS SPECIAL ADVISORY 59-800, SAMPLE WAS SENT TO TEXTRON FOR ANALYSIS. AS PER THE SERVICE ADVISORY THE AIRCRAFT WAS Dec 1, 2000 · Piper PA46350PSDR 20001214SH011Crankcase · failedCRANKCASE FAILED AROUND NR 6 CYLINDER CAUSING CYLINDER TO DEPART ENGINE IN-FLIGHT. THE AIRCRAFT WAS IN LEVEL FLIGHT AT TIME OF FAILURE. (X)Dec 1, 2000 · N958Q · Beech 95C55SDR AU001269Bolt · broken(AUS) LOWER THOUGH BOLT BETWEEN NR 2 AND NR 3 CYLINDERS BROKEN 35MM (1.5IN) FROM THE LEFT END OF THE BOLT IN THE O'' RING SEAL GROOVE.Nov 27, 2000 · Cessna 402CSDR 20001206SH031Connecting Rod · failedAIRCRAFT WAS CLIMBING AFTER TAKEOFF, LOUD NOISE HEARD BY PILOT, OIL PRESSURE STARTED TO DROP, ENGINE FEATHERED. AIRCRAFT LANDED WITHOUT INCIDENT. FOUND NR 5 CYLINDER CONNECTING ROD FAILED, KNOCKED HOLE IN UPPER CRANKCASE. ENGINE TOTAL TIME 2,768.7 HOURS, 1Nov 16, 2000 · N410AJ · Cessna 421CSDR 20001206SH022Crankshaft · brokenCRANKSHAFT BROKEN AFT ON NR 2 ROD JOURNAL AT NR 2 MAIN BEARING. ENGINE HAD 401.0 HOURS SINCE RE-MANUFACTURE. (X)Nov 14, 2000 · N11NP · Cessna 421CSDR 20001206SH026Crankshaft · failedTHIS ACFT RECEIVED NEW FROM CESSNA FACTORY. UPON REMOVAL OF PROPELLER TO FACILITATE INSTALL OF AFTERMARKET AIR CONDITIONERS, NOTED THAT 2 OF THE 4 PROPELLER ALIGNMENT BUSHINGS THAT ARE PRESSED INTO THE CRANKSHAFT FLANGE WERE EXTRUDED FROM THE BACKSIDE OF THE Oct 30, 2000 · N2269S · Cessna 172RSDR AU001270Bolt · broken(AUS) UPPER THROUGH BOLT LOCATED BETWEEN NR 2 AND NR 3 CYLINDERS BROKEN.FAILURE OCCURRED APPROXIMATELY 76.2MM (3IN) FROM THE LEFT END OF THE BOLT.Oct 25, 2000 · Cessna TU206GSDR AU001134Adapter · worn(AUS) LT ENGINE CRANKSHAFT STARTER ADAPTER GEAR TEETH HAD ABNORMAL WEAR INDICATIONS.Oct 24, 2000 · Cessna 404CESSNASDR CA001106008Crankcase · cracked(CAN) ON A LEG BETWEEN WPG TO YTH, THE PILOT SNAGGED AN OIL TANK ON RT ENGINE. UPON INVESTIGATION MAINTENANCE FOUND RT ENGINE S/N 239841R RT CASE HALF CRACKED UNDER MAG. MAINTENANCE REMOVED ENGINE AND REPLACED WITH 0 SMOH UNIT S/N 810549R AND RETURNED THE AIOct 20, 2000 · Cessna 421CSDR AU001014Connecting Rod · mismanufactured(AUS) CONNECTING ROD BIGEND BOLT HOLES INCORRECTLY DRILLED. BOLT HOLESWERE DRILLED APPROXIMATELY TWO DEGREES OF CENTRE LINE RESULTING IN A TAPERING GAP OF 0.889MM (0.035IN). MANUFACTURING ERROR.Oct 18, 2000 · Grob G115CSDR 20001109SH029Lifter · wornAFTER FINDING FINE FERROUS METAL IN OIL FILTER , FURTHER INVESTIGATION LED TO THE FAILED CAMSHAFT AND TAPPETS. BOTH TAPPETS RIDE ON THE SAME LOBE. SUBMITTER STATED THESE WERE RECONDITIONED PARTS. (X)Oct 17, 2000 · N3327M · Piper PA28R201SDR 20001109SH028Camshaft · wornAFTER FINDING FINE FERROUS METAL IN OIL FILTER , FURTHER INVESTIGATION LED TO THE FAILED CAMSHAFT AND TAPPETS. BOTH TAPPETS RIDE ON THE SAME LOBE. SUBMITTER STATED THESE WERE RECONDITIONED PARTS. (X)Oct 17, 2000 · N3327M · Piper PA28R201
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