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 99ZZZX3495Crankshaft · crackedCRANKSHAFT REMOVED FROM REBUILT ENGINE DURING OVERHAUL WAS FOUND TO HAVE NUMEROUS HEAT CRACKS IN ALL FORWARD FILLETS OF CRANKPINS. FILLET RADII OF ALL CRANKPINS AND MAIN JOURNALS WERE FOUND BELOW TOLERANCES OF OVERHAUL MANUAL. CRANK WAS .010 INCH UNDERSIZE, May 12, 1999 · N212AF · Cessna 150MSDR CA990531009Connecting Rod · fractured(CAN) INITIAL INVESTIGATION REVEALED A 2 INCH HOLE THROUGH THE TOP OF THE RIGHT ENGINE BLOCK. THE RIGHT MAGNETO BROKE AND VIEWING THROUGH THE HOLE OF THE CRANKSHAFT, THE CONNECTING ROD WAS FOUND DESTROYED.May 11, 1999 · Cessna T210NSDR 99ZZZX2437Camshaft · chippedDURING A ROUTINE 100-HOUR INSPECTION EXCESSIVE METAL WAS FOUND IN THE ENGINE OIL FILTER. FURTHER INVESTIGATION REVEALED A CHIPPED CAM LOBE AND LIFTER.May 10, 1999 · N961CC · Cessna 210NSDR 99ZZZX2320Camshaft · wornAT 100-HOUR INSPECTION, DISCOVERED FERROUS METAL CONTAMINATION IN FILTER ELEMENT. PERFORMED VALVE CLEARANCE CHECK AND FOUND NR 5, NR 6 INTAKE LOBBS WITH EXCESSIVE CLELARANCE BASED ON A SIMILAR CIRCUMSTANCE. IT WAS DECIDED TO REMOVE THE ENGINE FROM SERVICE FOMay 1, 1999 · N3527U · Piper PA31350SDR AU990430010Bearing · failed(AU) NR 2 MAIN BEARING FAILURE, POSSIBLY CAUSED BY FRETTING OF THE CRANKCASE HALVES. THIS FAILURE ALSO CAUSED TWO MAJOR CRACKS IN THE CRANKSHAFT, RADIATING OUT FORWARD AND AFT OF THE OIL HOLE AND NUMEROUS SURFACE CRACKS ON THE FACE OF THE MAIN JOURNAL.Apr 30, 1999 · Cessna 421BSDR DW7A9901Rod Bolt · separatedCRUISE FLIGHT, 1,500 MSL, 31 RPM/NEGATIVE INDICATION OF EMANANT FAILURE ON ENGINE INSTRUMENTS. HEAVY VIBRATION FOR 5-10 SECONDS, FAILURE OF LEFT ENGINE CASE, ENGINE SHUTDOWN, RTB. SUBMITTER SUGGESTED POSSIBLE CASE OF FAILURE AND ROD END BOLT NOT PROPERLY TORApr 29, 1999 · N74CE · Piper PA31350SDR 99ZZZX2151Crankshaft · failedBROKEN CRANKSHAFT WHILE IN CRUISE FLIGHT. ENGINE SEIZED. LANDED ON ROAD WITHOUT COMPLICATIONS. NO OTHER DAMAGE.Apr 24, 1999 · N527RL · Amtr RV6SDR AU990734Bearing · spalled(AUS) NR 2 AND NR 3 CYLINDER CONNECTING ROD BIG END BEARINGS SPALLED. SUSPECT CAUSED BY PARTIAL BREAK-UP OF HYDRAULIC TAPPET. METAL CONTAMINATION OF ENGINE OIL SYSTEM.Apr 23, 1999 · Beech 76SDR AU990425Rod · failed(AUS) LEFT ENGINE'S NR 5 AND NR 6 CONNECTING RODS FAILED. MAJOR INTERNAL DAMAGE TO THE ENGINE.Apr 14, 1999 · Beech 58SDR AU990534Camshaft · worn(AUS) CAMSHAFT REAR LOBE WORN EXTENSIVELY.Apr 12, 1999 · Cessna 172MSDR AU990376Lifter · worn(AUS) NR 4 CYLINDER EXHAUST VALVE LIFTER DAMAGED DUE TO BREAKING AWAY OF THE HARD FACING ON THE BOTTOM OF THE LIFTER. INVESTIGATION FOUND SIMILAR DAMAGE ON NR 1 CYLINDER EXHAUST VALVE LIFTER, NR 5 CYLINDER INLET AND EXHAUST VALVE LIFTERS, AND, NR 2 CYLINDER EXApr 12, 1999 · Cessna 210MSDR AU990567Crankshaft · cracked(AUS) CRANKSHAFT CRACKED IN TWO PLACES FROM THE CRANK GEAR DOWEL HOLE. CRANKCASE MAIN TUNNEL MEASUREMENTS OUT OF LIMITS. CAMSHAFT LOBES BREAKING UP.Apr 9, 1999SDR AU990353Bearing · failed(AUS) CRANKSHAFT FRONT BEARING FAULTY. WHITE METAL BREAKING AWAY FROM THE BEARING. METAL CONTAMINATION OF OIL SYSTEM.Apr 8, 1999 · Bnorm BN2A26SDR 99ZZZX2035Bearing · failedDURING ROUTINE MAINTENANCE, THE OIL SCREEN WAS FOUND TO HAVE METAL PARTICLES IN IT. THE ENGINE WAS 200 HOURS AWAY FROM TBO. THE ENGINE WAS TORN DOWN TO DETERMINE THE SOURCE OF METAL. DISCOVERED ONE OF THE MAIN BEARINGS TO THE CRANKSHAFT WAS FLAKING OFF. THApr 5, 1999 · N73764 · Cessna 172NSDR 99ZZZX1885Lifter · spalledDURING 100-HOUR INSPECTION, FOUR CYLINDERS SHOWED LOW COMPRESSION. UPON REMOVAL OF CYLINDERS, NOTED THE NR 5 CYLINDER EXHAUST CAM FOLLOWER WAS SPALLED BAD. INSPECTION OF CAM LOBE DID NOT APPEAR NEARLY AS BAD AS CAM FOLLOWER. CAMSHAFT AND CAM FOLLOWERS WERE Apr 5, 1999 · N761VH · Cessna T210MSDR CA990330037Rod · broken(CAN) OIL PROBLEM IN-FLIGHT, AIRCRAFT RETURNED TO POINT OF DEPARTURE. POST-FLIGHT INSPECTION FOUND NO OIL IN THE ENGINE, BUT OIL WAS FOUND ON THE ENGINE COMPARTMENT. TEMPERATURE PROBE NUT FOUND LOOSE AND THIS WAS DETERMINED TO BE THE CAUSE OF THE OIL LEAK. Mar 22, 1999 · Cessna 150MSDR CA990323021Camshaft · worn(CAN) DURING THE REMOVAL OF NR 1 AND NR 3 CYLINDERS TO INVESTIATE AN INCREASE IN OIL CONSUMPTION, FOUND THE NR 3 AND NR 4 CYLINDER INTAKE CAM LOBES WERE WORN ABNORMALLY. THE CORRESPONDING LIFTERS WERE NOT DAMAGED. THE ENGINE WAS REMOVED AND SENT FOR REPAIR.Mar 17, 1999SDR AU990374Bearing · failed(AUS) NR 2 ENGINE MASTER ROD BEARING FAILED. THE MASTER ROD WAS EXTENSIVELY DAMAGED.Mar 17, 1999 · Doug C54ESDR CA990330023Rod · broken(CAN) DURING FLIGHT, THE NR 1 ENGINE BEGAN TO LOSE POWER. THE AIRCRAFT WAS DIVERTED AND LANDED WITHOUT INCIDENT. POST-FLIGHT INSPECTION FOUND THE NR 6 CYLINDER PISTON NOT MOVING. FURTHER INVESTIGATION FOUND THE CONNECTING ROD BROKEN. THE ENGINE WAS REPLACEMar 10, 1999 · Piper PA31325SDR CA990323008Rearcase · cracked(CAN) OIL WAS OBSERVED ON THE ENGINE GEARCASE. AFTER CLEANING AND INSPECTION, A CRACK WAS FOUND AT A STUD HOLE. THE SUBMITTER STATES THAT A ZERO TIME ENGINE WAS ALSO INSPECTED AND A HAIRLINE CRACK WAS FOUND ON THAT ENGINE. BOTH ENGINES ARE BEING RETURNED TOMar 8, 1999 · Cndair CL2151A10SDR 99ZZZX1110Support · crackedNEW CESSNA WITH 50.0 HOURS UNDERGOING FIRST PHASE INSPECTION. FOUND ENGINE STARTER RING GEAR SUPPORT ASSY, PN 31M22045, HAD VISIBLE CRACK ON FRONT FACE. WHEN REMOVED, AFT SIDE ADJACENT TO CRACK HAD CASTING FLAW.Mar 4, 1999 · N494SP · Cessna 172SSDR 99ZZZX1645Piston Pin · peeledENGINE FAILURE. HIGH AMOUNTS OF FERROUS AND NON-FERROUS METALS FOUND IN OIL FILTER. FOUND THAT UP TO .1250 INCH OF METAL PEELED FROM NR 1, NR 2, AND NR 6 PISTON RING PLUGS. ALL 6 ROD BEARINGS SEVERELY SCORED FROM FOREIGN METAL. FRONT MAIN BEARING ALSO SEVEMar 1, 1999 · N9167R · Piper PA46350PSDR 99ZZZX1200Bolt · brokenWHILE TROUBLESHOOTING AN OIL LEAK, THE LOWER THRU-BOLT BETWEEN THE NR 4 AND NR 5 CYLINDER WAS FOUND BROKEN APPROXIMATELY .50 INCH FROM THE END. AFTER CYLINDER REMOVAL AND COMPLETE CRANKCASE AND TORQUE INSPECTION, NO OTHER DEFECTS WERE FOUND.Mar 1, 1999 · N215MP · Cessna 421CSDR 99ZZZX1196Piston Pin · mismanufacturedA65-8 ENGINE INSTALLED IN A LUSCOMBE MODEL 8A. WHILE IN-FLIGHT, THE ENGINE BEGAN TO MISFIRE AND RUN ROUGH. THE PILOT WAS ABLE TO MAKE A FORCED LANDING WITH ONLY MINOR INJURIES TO HIMSELF AND PASSENGER. POST-ACCIDENT EXAMINATION OF THE ENGINE REVEALED THE NRMar 1, 1999 · Luscom 8ASDR 99ZZZX1458Gear · spalledAIRCRAFT IN FOR ROUTINE (SCHEDULED) 100 HOUR INSPECTION. STARTER ADAPTERS WERE REMOVED FROM BOTH ENGINES, AND INSPECTED IAW TCM SB NR CS894-4A. THE ADAPTER ASSY AND CRANKSHAFT GEAR ON THE NR 2 ENGINE (ITEM 3) DID NOT PASS INSPECTION CRITERIA OUTLINED, (DEEP SPFeb 24, 1999 · N745CA · Cessna 421CSDR CA991231063Crankshaft · cracked(CAN) TWO CRACKS FOUND BY NDI SHOP, CRANK REJECTED.Feb 22, 1999 · Piper PA34200TSDR CA991231062Cotter Pin · broken(CAN) COTTER PIN FOUND IN OIL SCREEN AT 100HR INSP.Feb 22, 1999 · Piper PA34200TSDR 20000714SH006Tappet · defectiveALL POSITIONS EXCEPT REARMOSTFOLLOWING EMERG LANDING, ENG TEARDOWN REVEALED ALL BUT ONE OF THE TAPPET FACES BROKEN. ENG STILL FUNCTIONING, BUT OIL PRESS WAS VERY LOW AT SHUTDOWN SINCE THE COURSE OIL SCREEN WAS 2/3 FULL OF PEA-SIZED AND SMALLER PIECES OF TAPPEFeb 22, 1999 · N5481T · Piper PA32300SDR 99ZZZX1181Crankshaft · crackedDETECTED FATIGUE CRACKS IN MAGNETIC PARTICLE INSPECTION. INSPECTED ON R & B AIRCRAFT SUPPLY CO, P.O. NR 1276.Feb 22, 1999SDR CA990303007Camshaft · worn(CAN) DURING SCHEDULED INSPECTION, MODERATE AMOUNT OF METAL WAS FOUND IN THE OIL FILTER. NR 2 AND NR 4 CYLINDERS WERE REMOVED FOR INVESTIGATION AND IT WAS OBSERVED NR 1 NR 2 CYLINDERS INTAKE CAMSHAFT LOBES WERE ABNORMALLY WORN AND THE CAM FOLLOWERS WERE BADLFeb 19, 1999SDR CA990303006Tappet · spalled(CAN) DURING SCHEDULED INSPECTION, MODERATE AMOUNT OF METAL WAS FOUND IN THE OIL FILTER. NR 2 AND NR 4 CYLINDERS WERE REMOVED FOR INVESTIGATION AND IT WAS OBSERVED NR 1 AND NR 2 CYLINDERS INTAKE CAMSHAFT LOBES WERE ABNORMALLY WORN AND THE CAM FOLLOWERS WERE BFeb 19, 1999SDR 99ZZZX1408Bearing · wornPILOT REPORTED LOW OIL PRESSURE. THE ENGINE WAS SHUT DOWN AND A LANDING WAS MADE AT CHILLICOTHE, MO. OIL PRESSURE RELIEF VALVE CLEANED, STARTED ENGINE AND OIL PRESSURE APPEARED NORMAL. AIRCRAFT FLOWN TO IRK, OIL PRESSURE FLUCTUATED AND WAS LOW. ENGINE WAS TOFeb 12, 1999 · N65RW · Beech B80SDR 99ZZZX1109Bearing · looseAIRCRAFT ENGINE LOST OIL PRESSURE. DURING ENGINE INSPECTION, TEAR-DOWN, DETERMINED THAT NR 4 ROD BEARING TURNED (SPUN) IN THE ROD JOURNEL CREATING EXCESSIVE HEAT. THE ROD CAME THROUGH THE SIDE OF THE CASE.Feb 12, 1999 · N7399W · Piper PA28180SDR 99ZZZX922Pin · mismanufacturedNEW VAR TYPE CRANK WAS RECEIVED TO REPLACE A NON-VAR TYPE. COUNTERWEIGHTS WERE AS INSTALLED BY TCM. COUNTERWEIGHTS WERE REMOVED TO CHECK PIN SIZES AND PART NUMBERS TO MAKE SURE TCM INSTALLED THE CORRECT ONES AND IN THE PROPER LOCATIONS. SUBMITTER FOUND THE TFeb 8, 1999SDR 99ZZZX1035Seal · failedPILOT NOTICED OIL LEAK, LANDED SAFELY AND SECURED AIRCRAFT. AFTER FURTHER INSPECTION, FOUND THE FRONT CRANKSHAFT SEAL PUSHED OUT OF ITS SEAT CAUSING THE OIL LEAK.Feb 4, 1999 · N76RL · Piper PA32300SDR CA990209012Camshaft · worn(CAN) DURING INSPECTION, A SMALL AMOUNT OF METAL PARTICLES WAS FOUND IN THE ENGINE OIL FILTER. INVESTIGATION REVEALED THE ABNORMAL WEAR TO THE CAMSHAFT AND THE CAM FOLLOWER WAS BADLY SPALLED. THE ENGINE WAS REMOVED AND SENT FOR REPAIR.Jan 28, 1999SDR AU990055Plug · cracked(AUS) NEW CYLINDER KITS CONTAINED CRACKED PISTON PIN END PLUGS. KITS WERE SUPPLIED AS A NEW ITEM.Jan 27, 1999SDR AU990045Crankcase · cracked(AUS) DURING COFA INSPECTION, THE ENGINE CRANKCASE WAS FOUND TO BE CRACKED ON THE RT SIDE. CRACK LENGTH 150 MM (5.91 INCH). ON ENGINE STRIP DOWN THE FOLLOWING ADDITIONAL DEFECTS WERE FOUND: 1. THREE OF THE FOUR CONNECTING RODS HAD IMPACT DAMAGE SCRATCHES AJan 25, 1999 · Dhav DHC1SER22SDR 99ZZZX913Master Rod · crackedMASTER ROD, PN A40083, BROKE AT BASE OF ROD POSSIBLY TO DUE METAL FATIGUE. METAL APPEARS TO HAVE BEEN CRACKED FOR SOME TIME PRIOR TO FAILURE EVIDENCED BY GRAY AREA AT SEPARATION AND LARGE AREA OF NON-DUCTILE METAL SEPARATION. MASTER ROD INSTALLED 219 HRS TSOJan 24, 1999 · N4935N · Boeing A75N1SDR 99ZZZX981Bearing · failedPILOT REPORTED 20 MILES FROM DESTINATION, LOSS OF OIL PRESSURE. CONTINUED TO DESTINATION AND SHUT ENGINE DOWN WHEN PILOT HAD THE FIELD MADE. UPON INSPECTION, IT APPEARED THE NR 2 ROD BEARING FAILED CAUSING THE NR 2 ROD TO SEPARATE FROM THE CRANKSHAFT CAUSINGJan 22, 1999 · N412RW · Cessna 402CESSNASDR AU990098Crankshaft · damaged(AUS) CRANKSHAFT AND TIMING GEARS DAMAGED. ENGINE HAD BEEN OVERHAULED IN THE USA APPROXIMATELY 285 HOURS PREVIOUSLY.Jan 20, 1999 · Univar 415DSDR CA990129017Crankcase · cracked(CAN) DURING CRUISE ,THE PILOT NOTICED FLUCTUATING MANIFOLD PRESSURE ON NR 1 ENGINE. THE ENGINE THEN LOST POWER AND BEGAN TO LOSE OIL PRESSURE. THE ENGINE WAS SECURED AND THE AIRCRAFT MADE AN UNEVENTFUL EMERGENCY LANDING. POST-FLIGHT INSPECTION FOUND TWO HOJan 18, 1999 · Cessna 414SDR CA990203001Lifter · broken(CAN) AFTER DEPARTURE DURING CLIMB-OUT, THE ENGINE BEGAN TO LOSE POWER. THE PILOT TURNED BACK TO THE POINT OF DEPARTURE, THE AIRCRAFT MADE A FORCED LANDING 38 MILES EAST OF THE BASE. THE AIRCRAFT WAS RECOVERED AND THE CAUSE OF THE POWER LOSS WAS DETERMINED TJan 15, 1999 · Cessna 182MSDR 99ZZZX756Crankshaft · mismanufacturedAT OVERHAUL, CRANKSHAFT GEAR COUNTERBORE WAS INSPECTED PER FAA AD 91-14-22. NEW GEAR, P/N 13S19646, COULD NOT BE INSTALLED IN CRANKSHAFT DUE TO OUT-OF-TOLERANCE CONDITION OF DOWEL HOLE RADIAL POSITION IN CRANKSHAFT. CRANKSHAFT WAS REPAIRED BY RELOCATING DOWEJan 12, 1999 · Robsin R22SDR CA990119016Crankcase · cracked(CAN) ON A SCHEDULED ON CONDITION INSPECTION, A CRACK WAS FOUND AT THE NR 2 CYLINDER HOLD DOWN STUD.Jan 4, 1999 · Beech 76SDR CA990115015Seal · leaking(CAN) OIL LEAK REPORTED BY PILOT. INSPECTION FOUND THE FRONT CRANKSHAFT SEAL LEAKING. IT HAD SLIPPED OUT APPROXIMATELY .0625 INCH AND WAS LOOSE. THE POSSIBLE CAUSE WAS A COLD START AND THE ENGINE RPM TOO HIGH DURING ENGINE WARM UP CAUSING HIGH OIL PRESSURE.Jan 4, 1999 · Piper PA31SDR 99ZZZX653Gasket · brokenTHE GASKETS THAT SEAL THE INTAKE MANIFOLD (WHICH HAS ENGINE OIL CIRCULATING THROUGH IT) HAVE BRASS EYELETS FORMED INTO THE PAPER GASKET AROUND THE BOLT HOLES. USING STANDARD TORQUE OF 175 INCH/POUND FOR THE .3125 INCH - 18 EACH BOLTS RESULTED IN THE GASKET LEJan 1, 1999 · N4254D · Beech G35SDR 99ZZZX652Gasket · brokenTHE GASKETS THAT SEAL THE INTAKE MANIFOLD (WHICH HAS ENGINE OIL CIRCULATING THROUGH IT) HAVE BRASS EYELETS FORMED INTO THE PAPER GASKET AROUND THE BOLT HOLES. USING STANDARD TORQUE OF 175 INCH/POUND FOR THE .3125 INCH - 18 EACH BOLTS RESULTED IN THE GASKET LEJan 1, 1999 · N4254D · Beech G35SDR AU981668Bearing · failed(AUS) DURING CLIMB, THE LT ENGINE MANIFOLD PRESSURE DECREASED FROM 39 INCHES TO 30 INCHES WITH A VISIBLE OIL AND SMOKE TRAIL. GROUND INVESTIGATION FOUND METAL CONTAMINATION IN THE LT ENGINE OIL FILTER AND FURTHER INVESTIGATION FOUND THAT THE NR 6 MAIN BEARINGDec 23, 1998 · Piper PA31350SDR 99ZZZX307Bolts · misinstalledUPON DISASSEMBLY OF C/CASE FOR PROPELLER STRIKE INSPECTION, MOST OF THE THRU-BOLT NUTS SEEMED TO BE OVERTORQUED. MAJOR EFFORT WAS NEEDED TO BREAK THEM LOOSE AND SEVERAL FELT THEY WERE TWISTING AND THEN BROKE LOOSE WITH A LOUD CRACK. SEVERAL OF THEM, WHEN ROLDec 23, 1998
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