JASC 8520

Service difficulty reports · 2,214

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 AU970340Stud · fractured(AUS) LH ENGINE NO1 CYLINDER HOLDDOWN STUDS PNO 38-13 (2OFF) AND PNO50-15 (2OFF) FRACTURED - INDUCTION TUBE SEPARATED FROM SUMPMar 22, 1997 · Piper PA31350SDR AU970271Crankcase · cracked(AUS) AT ENGINE OVERHAUL THE FOLLOWING COMPONENTS WERE FOUND UNSERVICEABLE:1. CRANKCASE WAS FPI AND WAS FOUND CRACKED INSIDE NO2 CYLINDER PAD2. CAMSHAFT LOBE CRACKED - CRACK LENGTH 19MM (0.75IN) 3. QUILL SHAFT HAD BADLY GALLED SPLINESMar 21, 1997 · Cessna 404CESSNASDR 97ZZZX1248Crankcase · crackedDURING OIL CHANGE, FOUND 1 INCH CRACK EXTENDING FROM CYLINDER NR 6 UPPER REAR STUD. AD 77-13-22 PARA(A) ADDRESSES THIS SUBJECT, BUT IS NOT INCLUDED IN THE SERIAL NUMBER REQUIREMENT LIST.Mar 20, 1997 · N999AN · Beech 58SDR AU970733Bearing · faulty(AUS) NO3 BEARING FAULTY - BEARING DOWEL ON NO3 JOURNAL HAD MOVED - SUSPECT INCORRECT FITMENTMar 19, 1997 · Piper PA31350SDR AU970275Saddle · fretted(AUS) AT ENGINE OVERHAUL THE FOLLOWING WAS FOUND: 1. CRANKCASE MAIN BEARING SADDLE EVIDENCE OF FRETTING AND NO4 CAMTUNNEL SCORED 2. CAMSHAFT WAS INSPECTED USING MPI AND CRACKS WERE FOUND ON TWO LOBES. ENGINE WAS FROM A PNG REGISTERED AIRCRAFTMar 18, 1997SDR 97ZZZX1224Crankshaft · crackedTHIS AIRCRAFT IS USED EXCLUSIVELY FOR FLIGHT TRAINING. ON PRE-FLIGHT, STUDENT AND INSTRUCTOR FOUND OIL ON THE COWLING. UPON INSPECTION, TWO CRACKS WERE FOUND ON THE CRANKSHAFT COVERGING AT THE RADIUS OF THE CRANKSHAFT AND CRANKSHAFT FLANGE. THIS ENGINE AND Mar 18, 1997 · N508PC · Socata TB9SDR AU970277Crankcase · defective(AUS) AT ENGINE OVERHAUL THE CRANKCASE WAS BOLTED TOGETHER AND TUNNELS WERE MEASURED OUT OF LIMITSMar 17, 1997 · Cessna 210NSDR AU970272Bushing · worn(AUS) AT ENGINE OVERHAUL THE FOLLOWING WAS FOUND: 1. CRANKCASE GOVERNER IDLER GEAR BUSHING HEAVILY WORN 2. CRANKSHAFT GEAR LOCK BOLT HAD SNAPPED IN THE CRANKSHAFT AND THE GEAR HAD DAMAGED THE DOWEL HOLE - ALSO DAMAGED WERE THE CRANKSHAFT GEAR AND IDLER GEARS 3Mar 17, 1997SDR AU970228Bushing · worn(AUS) ENGINE COUNTERWEIGHT BUSHES AND ROLLERS PNO 639198 AND PNO630261-43 WORN UNEVENLY - INTERNAL CORROSION EVIDENT ON STEEL PARTSMar 14, 1997SDR 97ZZZX1234Through Bolt · failedUPON INSPECTION OF LT ENGINE, FOUND NR 2 CYLINDER SEPARATED FROM CASE BY 2-3 INCHES. UPPER THROUGH-BOLT APPEARS TO BE BROKEN INTERNALLY AS WELL AS LOWER THROUGH-BOLT, ALL UPPER AND LOWER CASE STUDS TO CYLINDER HOLD-DOWN APPEAR TO BE BROKEN AT THREAD AREA OR AMar 12, 1997 · N977GF · Beech 58SDR CA970325005Tappet Body · worn(CAN) DURING INSPECTION FERROUS AND NON-FERROUS METAL WAS FOUND IN THE OIL FILTER. CAMSHAFT LOBES #2 EXHAUST AND #5 AND #6 INTAKE AND CORRESPONDING TAPPET BODIES STARTING TO FAIL FROM SPALLING. REAR SECTION OF FRONT MAIN BEARING OVERHEATED WITH SURFACE MATERIAMar 7, 1997SDR 97ZZZX1953Gear Tooth · failedENGINE STARTED TO MAKE A KNOCKING NOISE WHILE IN-FLIGHT. AS THE ENGINE WAS THROTTLED, BACK NOISE BECAME MORE PRONOUNCED. AIRCRAFT WAS LANDED AT NEAREST AIRPORT. INVESTIGATION OF KNOCKING NOISE REVEALED THAT ONE TOOTH WAS MISSING FROM THE CRANKSHAFT GEAR. EMar 4, 1997 · N734JD · Cessna 172NSDR 97ZZZX1007Camshaft · failedTSIO520VB ENGINE REPORTED FAILURE. FOUND CAMSHAFT FAILED JUST FORWARD OF GOVERNOR DRIVE GEAR. RENDERED GOVERNOR INOPERATIVE.Feb 26, 1997SDR AU970296Crankcase · cracked(AUS) ENGINE BULK STRIPPED FOLLOWING PROPELLER STRIKE - CRANKCASE FOUND TO BE CRACKED BETWEEN NO4 AND NO5 MAIN BEARING SADDLES - FOUND USING FPIFeb 25, 1997 · Cessna 210LSDR AU970392Nut · cracked(AUS) NO6 CYLINDER LOWER FORWARD THROUGH BOLT NUT CRACKED DUE TO CADMIUM EMBRITTLEMENTFeb 24, 1997 · Cessna A185FSDR AU970153Crankcase · worn(AUS) CRANKCASE SADDLES FRETTINGFeb 24, 1997SDR AU970152Camshaft · worn(AUS) ENGINE CAMSHAFT LOBES WORN - COUNTERWEIGHT BUSHES OUT OF LIMITSFeb 24, 1997SDR AU970151Camshaft · worn(AUS) ENGINE CAMSHAFT CAM LOBES WORN BEYOND LIMITS - ALL CYLINDERS AND ASSOCIATED PARTS UNSERVICEABLEFeb 24, 1997SDR CA970325007Tappet Body · worn(CAN) PILOT REPORTED HIGH EGT ON DESCENT AFTER MAKING A POWER REDUCTION. INSPECTION FOUND THE CAMSHAFT #1 EXHAUST LOBE AND #1 TAPPET BODY HAD 1/3 OF THE FACE MATERIAL WORN OFF AND RESTRICTING THE EXHAUST VALVE FROM FULL MOVEMENT. THE MAIN OIL FILTER HAD METAL Feb 20, 1997SDR CA970325006Front Bearing · overheated(CAN) PROP HARD TO CONTROL IN FLIGHT. INSPECTION FOUND NON FERROUS METAL IN THE MAIN OIL FILTER AND THE FINGER SCREENS. THE REAR SECTION OF THE FRONT MAIN BEARING INSIDE DIAMETER OVERHEATED WITH SURFACE MATERIAL MELTING, ROLLING AND FLAKING OFF THE BEARING BACFeb 17, 1997SDR AU970158Connecting Rod · broken(AUS) ENGINE NO5 CYLINDER CONNECTING ROD BIG END BEARING FAILED DUE TO LACK OF LUBRICATION/COOLING CAUSED BY LOSS OF OIL OVERBOARD - LOSS OF OIL WAS THROUGH A WORN AND HOLED EXHAUST PUSHROD TUBE CAUSED BY A BENT PUSHROD, DUE TO STICKING VALVE - CONNECTING RODFeb 15, 1997 · Cessna U206GSDR AU970117Connecting Rod · failed(AUS) CONNECTING ROD END CAP SEPARATED - PRELIMINARY INVESTIGATION INDICATES FAILURE IN AREA APPROXIMATELY 10MM (0.393IN) ABOVE THE BOLT SHOULDER ON THE CAMSHAFT SIDE BEHIND THE HARD FACE FOR THE BEARING SHELL PROGRESSING OUTWARDS UNTIL FAILURE FROM OVERLOAD -Feb 15, 1997 · Cessna 182QSDR AU970273Camshaft · worn(AUS) ENGINE WAS BULK STRIPPED FOLLOWING METAL CONTAMINATION OF OIL FILTER - CAMSHAFT LOBES FOUND TO BE WORNFeb 13, 1997 · Mooney M20ESDR 97ZZZX960Crankcase · crackedFACTORY REMANUFACTURED ENGINE: OPENED CRATE TO INSTALL ENGINE. FOUND CRACK IN CRANKCASE REAR NR 2 TOP CYLINDER BASE STUD. CRACK APPROXIMATELY .6250 INCH LONG. ZERO TIME ON ENGINE.Feb 11, 1997SDR 97ZZZX1823Crankcase · crackedOIL LEAK. FOUND RIGHT CRANKCASE CRACKED IN THE MIDDLE OF THE REAR MOUNTING FLANGE OF THE ALTERNATOR. CRACK EXTENDED TOWARDS THE NR 4 MAIN BEARING 45MM (1.75 INCH). LOOKING FROM THE OUTSIDE, THE CRACK ALSO EXTENDS TOWARDS THE BACK 25MM (1 INCH) DIRECTLY UNDEFeb 11, 1997 · N2FOR · Cessna 402CSDR 97ZZZX817Crankshaft · fracturedAT OIL CHANGE 7 FERROUS PIECES .430 INCH LONG .095 INCH THICK AND BETWEEN .125 INCH AND .250 INCH WIDE WERE FOUND IN SUCTION SCREEN ALONG WITH ALUMINUM SHAVINGS. OIL PAN REMOVAL AND VISUAL INSPECTION REVEALED A BROKEN CORNER OFF THE COUNTERWEIGHT BLADE ON THEFeb 10, 1997 · N192CS · Piper PA31PSDR 97ZZZX885Camshaft · brokenENGINE OVERSPED IN CRUISE FLIGHT AT 6,500 FEET. MAXIMUM OVERSPEED WITNESSED WAS 3,500 RPM. AIRCRAFT LANDED AT FIRST SUITABLE AIRFIELD. ON INSPECTION, CAMSHAFT WAS FOUND BROKEN IN TWO BETWEEN FORWARD BEARING AND GOVERNOR DRIVE GEAR CAUSING PROPELLER TO DECREFeb 2, 1997 · N1424N · Piper PA24260SDR AU970114Tappet · spalled(AUS) CAMSHAFT NO5 LOBE AND ASSOCIATED TAPPET BODIES (2OFF) SEVERELY SPALLEDJan 29, 1997 · Piper PA25235SDR AU970109Dowel · sheared(AUS) RH CRANKCASE NO3 DOWEL SHEARED ALLOWING MOVEMENT OF THE MAINBEARINGS - WEAR ALSO TO CRANKCASE TUNNEL AND SCORING OF THE CRANKCASE JOURNAL - DOWEL WAS SUPERCEDED (STEPPED) TYPEJan 29, 1997 · Piper PA25235SDR AU970066Crankcase · cracked(AUS) THE FOLLOWING DEFECTS WERE FOUND DURING ENGINE STRIP FOR OVERHAUL 1. CRANKCASE CRACKED IN NOSE AREA ADJACENT TO THROUGH STUDS 2. CRANKSHAFT CRACKED IN AREA AROUND FORWARD THRUST FACE3. STARTER SHAFT CRACKED4. OIL PUMP BODY AND GEARS WORN BEYOND LIMITSJan 29, 1997SDR AU970062Connecting Rod · broken(AUS) NO4 CYLINDER CONNECTING ROD BROKEN IN AREA JUST BELOW PISTON PIN BOSSJan 27, 1997 · Gulstm GA7SDR 97ZZZX602Connecting Rod · failedAFTER PREVIOUS FLIGHT SHUTDOWN DUE TO OIL LOSS FROM BROKEN OIL LINE, OIL LINE WAS REPLACED AND ENGINE GROUND RUN. A/C WAS ON FERRY FLIGHT FROM ARCTIC VILLAGE TO FAIRBANKS WHEN LEFT ENGINE SUFFERED IMMEDIATE STOPPAGE. THE AIRCRAFT WAS LANDED EN ROUTE AT FORT Jan 26, 1997 · N101LJ · Piper PA31SDR 97ZZZX609Connecting Rod · brokenPRELIMINARY REPORT - PRECAUTIONARY ENGINE SHUTDOWN FOR VIBRATION, NOISE, AND LARGE QUANTITY OF OIL TRAILING FROM COWLING. SUBSEQUENT EXAMINATION INDICATES THAT THE NR 5 CYLINDER, PISTON CONNECTING ROD, P/N LW 10646 19332, FAILED BELOW THE PISTON PIN. THE RESJan 24, 1997 · N7164D · Piper PA31350SDR 97ZZZM670Bushing · failedFLT 131 - TCM TEARDOWN REPORT FOUND COUNTERWEIGHT BUSHING IN CRANKSHAFT CHECK, NR 2 LEADING EDGE, CRACKED AND BROKE UP AFTER ROTATING IN THE BUSHING BORE. THE COUNTERWEIGHT PIN BROKE THOUGH THE PLATE AND SNAP RING AND THEN ESCAPED FROM THE COUNTERWEIGHT. ALLJan 17, 1997 · N87147 · Cessna 402BSDR 97ZZZM257Connecting Rod · failedFLT 131 - EN ROUTE PQI-PWM - FLIGHT CREW LOST RIGHT ENGINE IN FLIGHT. AIRCRAFT LANDED AT BGR WITHOUT INCIDENT. PRE-INSPECTION NOTED OIL PRESENT, DAMAGE TO UPPER COWL. FURTHER INSPECTION NOTED BOTH MAGNETOS DAMAGED, NR 2 CONNECTING ROD THROUGH ENGINE CASE. Jan 17, 1997 · N87147 · Cessna 402BSDR 97ZZZM210Connecting Rod · failedFLT 131 - PQI-PWM - FLT CREW LOST RIGHT ENGINE IN FLIGHT. AIRCRAFT WAS LANDED AT BANGOR AIRPORT. PRE-INSPECTION NOTED BOTH MAGNETOS DAMGED, NR 2 CONNECTING ROD THROUGH ENGINE CASE. ENGINE WAS OVERHAULED WITH 446.4 HOURS. ( M)Jan 17, 1997 · N87147 · Cessna 402BSDR AU970142Crankcase · cracked(AUS) CRANKCASE NO2 MAIN BEARING SUPPORT CRACKED - EVIDENCE OF MAIN BEARING SADDLE FRETTING - FOUND DURING BULK STRIP FOLLOWING PROPELLER STRIKEJan 16, 1997SDR AU970236Tappet · out of adjust(AUS) ALL VALVE TAPPET CLEARANCES OUT OF ADJUSTMENTJan 13, 1997 · Dhavxx DH82AROBRTSNSDR 97ZZZX3946Idler Gear · wornPILOT REPORTED INOPERATIVE MAGNETO ON REAR ENGINE, LEFT POSITION. MECHANIC REMOVED MAGNETO AND FOUND THE LEFT CRANKSHAFT IDLER GEAR ASSEMBLY WORN OUT AND ENGINE OIL SUMP SUCTION FILTER CONTAMINATED WITH METAL PARTICLES. ENGINE CHANGED.Jan 13, 1997 · N905VL · Bnorm BN2AMK32SDR 97ZZZX181Stud · stretchDURING THE COURSE OF A NORMAL ENG OVERHAUL, IT WAS FOUND THAT ABOUT ONE-THIRD OF THE CYL DECK STUDS WOULD NOT HOLD SPECIFIED TORQUE WITHOUT STRETCHING. THE STUDS ARE A NEWER 'NECKED DOWN' DESIGN. THE MECH REPLACED ALL CYL DECK STUDS WITH AN OLDER STRAIGHT DEDec 26, 1996SDR 97ZZZX823Crankshaft · brokenENGINE SEIZED IN-FLIGHT WITH NO WARNING (APPROX 5 SECONDS OF ROUGH OPERATION). PILOT MADE UNEVENTFUL LANDING IN THE FIELD. ENGINE WAS REMOVED AND DISASSEMBLED. CRANKSHAFT FOUND BROKEN IN TWO BETWEEN NR 3 AND NR 4 CONNECTING RODS. ENGINE INSPECTED FOR PROP Dec 20, 1996 · N4566H · Mooney M20JSDR 97ZZZX175Lifter · spalledFERROUS METAL FOUND IN OIL SCREEN AT INSPECTION. AFTER FURTHER INVESTIGATION, FOUND ALL 4 INTAKE LIFTER BODIES SEVERELY SPALLED AND THE 2 CAM LOBES THAT OPERATE THEM WORN.Dec 19, 1996 · N73462 · Cessna 172MSDR CA970124002Transfer Tube · loose(CAN) DURING TEARDOWN OF A TIME EXPIRED ENGINE IT WAS DISCOVERED THE OIL TRANSFER TUBE IN THE CRANKSHAFT TO THE #6 CONNECTING ROD HAD WORKED LOOSE AND BEGAN WEARING INTO THE CONNECTING ROD BEARING. THIS TUBE IS FIXED AT MANUFACTURE. THE CRANKSHAFT WAS SCRAPPEDDec 16, 1996 · Cessna 207SDR 97ZZZX420Bolt · nut defectDURING INSTALLATION AND TORQUE OF NEW CONTINENTAL P/N 35972 CON ROD BOLT, IT WAS FOUND NUT WAS DEFECTIVE. NUT SLIPPED PRIOR TO 39 FEET/POUNDS. BOLT P/N 35972. NUT P/N 626140.Dec 16, 1996SDR CA961216024Crankshaft · corroded(CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOVAL OF THE CORROSION AND PITTING TO THE MAXIMUM ALLOWABLE I.D. OF 1.910" STILL INDICATED PITTING IN TDec 3, 1996SDR CA961216023Crankshaft · corroded(CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOVAL OF THE CORROSION AND PITTING TO THE MAXIMUM ALLOWABLE I.D. OF 1.910" STILL INDICATED PITTING IN TDec 3, 1996SDR CA961216022Crankshaft · corroded(CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOVAL OF THE CORROSION AND PITTING TO THE MAXIMUM ALLOWABLE I.D. OF 1.910" STILL INDICATED PITTING IN TDec 3, 1996SDR CA961216021Crankshaft · corroded(CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOVAL OF THE CORROSION AND PITTING TO THE MAXIMUM ALLOWABLE I.D. OF 1.910" STILL INDICATED PITTING IN TDec 3, 1996SDR CA961216020Crankshaft · corroded(CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOVAL OF THE CORROSION AND PITTING TO THE MAXIMUM ALLOWABLE I.D. OF 1.910" STILL INDICATED PITTING IN TDec 3, 1996SDR CA961216019Crankshaft · corroded(CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOVAL OF THE CORROSION AND PITTING TO THE MAXIMUM ALLOWABLE I.D. OF 1.910" STILL INDICATED PITTING IN TDec 3, 1996
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