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.
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
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
SDR CA960320005Camshaft · pitted corroded(CAN)ENGINE WAS BEING INSPECTED PRIOR TO THE EXTENSION PER AMA 571-103/1. CAMSHAFT AND FOLLOWERS CORRODED AND PITTED. ALSO, 3 CRACKED CYLINDERS.SDR 95ZZZX6555Crankcase · crackedDISCOVERED A 3 INCH LONG CRACK IN ENGINE CASE BELOW NR 1 CYLINDER WHILE INVESTIGATING AN OIL LEAK.SDR 95ZZZX6536Crankshaft · crackedENGINE WAS WINDMILLING DURING A GEAR-UP LANDING (10-11-95) AT ROCKY MOUNTAIN AIRCARE. REPAIRED BELLY AND HAD PROP OVERHAULED AT H & H. REINSTALLED PROPELLER WITH A DIAL INDICATOR RUN-OUT CHK ONLY, WAS RETURNED TO SERVICE AS AIRWORTHY. DURING THE INSPECTION,SDR CA951130016Seal · displaced(CAN)IN CRUISE PILOT NOTICED OIL STREAMING BACK ALONG CANOPY. AN EMERG WAS DECLARED & ACFT LANDED.ENG WAS SHUTDOWN IMMEDIATELY & ACFT TOWED TO MAINT.THE OIL LEVEL PRIOR TO FLT WAS 6 QUARTS AFTER ENG SHUTDWN THE OIL LEVEL WAS CHECKED AT 3.5 QUARTS.POST FLT INSSDR 96ZZZX331Rod Bearing · failedNR 2 ENGINE HAD INCREASING OIL TEMPERATURE AND DECREASING OIL PRESSURE. THIS STABILIZED, BUT OIL QUANTITY CONTINUED TO DECREASE AND SMOKE WAS OBSERVED COMING OUT OF THE OUTBOARD AUGMENTOR TUBE. ENGINE SHUT DOWN AND SECURED, AND RETURNED TO SDQ. FOUND MASTERSDR 95ZZZX6416Through Bolt · brokenCRANKCASE 'THROUGH' BOLTS, UPPER AND LOWER FOR NR 2 AND NR 3 CYLINDERS, BROKEN AT CYLINDER BASE NUTS. LOCATED AFTER REPORTED OIL LEAK. ENGINE TT 3,816.90 HOURS. TSMOH, 535.63 HOURS.SDR CA951102009Crankshaft · broken(CAN)ENGINE CRANKSHAFT BROKEN BETWEEN #1 AND #3 CYLINDERS.SDR CA951108015Crankshaft · cracked(CAN)INVESTIGATION OF #1 ENGINE OIL LEAK FOUND OIL FLOW AT THRUST BEARING (CRANKSHAFT). ENGINE MOTORING INDICATED NO CYLINDER BLOW BY. PROPELLER REMOVED AND CRANKSHAFT CAPPED, ACTUATION OF FEATHERING PUMP INDICATED LOSS OF OIL THROUGH AN ANNULAR CRACK STARTINSDR 95ZZZX6545Crankcase · crackedDURING ENGINE INSPECTION, TECHNICIAN TRACED OIL LEAK TO A CRANKCASE CRACK IN THE AREA OF THE ALTERNATOR MOUNT BOSS. CRACK IS IN THIS AREA OF RIGHT CRANKCASE HALF LESS THAN .25 INCH FORWARD OF SECOND CRANKCASE BOLT HOLE (FROM FRONT OF ENGINE). NEW ENGINE BEINSDR 95ZZZX6393Connect Rod · failedDURING LEVEL FLIGHT WITHOUT INDICATION OF POSSIBLE PROBLEM, THE ENGINE FAILED. PROBLEM WAS DETERMINED TO BE A BROKEN CONNECTING ROD BOLT. ENGINE CASE WAS DESTROYED. AIRCRAFT WAS NOT DAMAGED.SDR 95ZZZX6617Connect Rod · bolt failedNR 4 CONNECTING ROD CAP CAME OFF. ENGINE FAILED. ENGINE TEAR DOWN REVEALED THAT ONE NUT CAME OFF OF ONE CONNECTING ROD BOLT AND THE OTHER CONNECTING ROD BOLT BROKE. IT WAS ALSO NOTED THAT ONE CONNECTING ROD BOLT WAS MISSING FROM THE NR 2 CONNECTING ROD. THSDR 95ZZZX6387Crankshaft · failedIN-FLIGHT, CRUISE SETTING, ENGINE RPM DROPPED TO ZERO, PROPELLER ROTATED 2-3 TIMES AFTER RPM GAUGE READ ZERO. PILOT EXECUTED EMERGENCY LANDING. UPON ENGINE TEAR-DOWN, FOUND CRANKSHAFT BROKEN AT FORWARD CHEEK OF NR 2 MAIN BEARING JOURNAL. SUSPECT DEFECT (SCRSDR 96ZZZX2560Camshaft · severely galledWHILE CONDUCTING ANNUAL INSPECTION, MANY SMALL STEEL FRAGEMENTS FOUND IN OIL SUCTION SCREEN AND IN FULL FLOW OIL FILTER. REMOVED CYLINDERS NR 3, 4, AND 1. FOUND NR 2 EXHAUST LOBE AND NR 2 LIFTER BODY BADLY DAMAGED. REMAINDER OF CAM LOBES AND LIFTER BODIES LSDR 95ZZZX6341Plug · missingLOWER PULLEY (CRANK) PLUG MISSING. STANDARD OIL PLUG INSTALLED IN ENGINE. LYCOMING P/N 77416 SHOULD BE INSTALLED IN ENGINES ON 269 SERIES HELICOPTERS PER LYCOMING SI 1180B. INSTALLED SCHWEIZER PLUG, PN 269A5513.SDR 95ZZZX6340Plug · missingLOWER PULLEY (CRANK) PLUG MISSING. STANDARD OIL PLUG INSTALLED IN ENGINE. LYCOMING P/N 77416 SHOULD BE INSTALLED IN ENGINES ON 269 SERIES HELICOPTERS PER LYCOMING SI 1180B. INSTALLED SCHWEIZER PLUG, PN 269A5513.SDR 95ZZZX6339Plug · missingLOWER PULLEY (CRANK) PLUG MISSING. STANDARD OIL PLUG INSTALLED IN ENGINE. LYCOMING P/N 77416 SHOULD BE INSTALLED IN ENGINES ON 269 SERIES HELICOPTERS PER LYCOMING SI 1180B. INSTALLED SCHWEIZER PLUG, PN 269A5513.SDR 95ZZZX6338Plug · missingLOWER PULLEY (CRANK) PLUG MISSING. STANDARD OIL PLUG INSTALLED IN ENGINE. LYCOMING P/N 77416 SHOULD BE INSTALLED IN ENGINES ON 269 SERIES HELICOPTERS PER LYCOMING SI 1180B. INSTALLED SCHWEIZER PLUG, PN 269A5513.SDR 95ZZZX6337Plug · missingLOWER PULLEY (CRANK) PLUG MISSING. STANDARD OIL PLUG INSTALLED IN ENGINE. LYCOMING P/N 77416 SHOULD BE INSTALLED IN ENGINES ON 269 SERIES HELICOPTERS PER LYCOMING SI 1180B. INSTALLED SCHWEIZER PLUG, PN 269A5513.SDR 95ZZZX6336Plug · missingLOWER PULLEY (CRANK) PLUG MISSING. STANDARD OIL PLUG INSTALLED IN ENGINE. LYCOMING P/N 77416 SHOULD BE INSTALLED IN ENGINES ON 269 SERIES HELICOPTERS PER LYCOMING SI 1180B. INSTALLED SCHWEIZER PLUG, PN 269A5513.SDR 95ZZZX6335Plug · missingLOWER PULLEY (CRANK) PLUG MISSING. STANDARD OIL PLUG INSTALLED IN ENGINE. LYCOMING P/N 77416 SHOULD BE INSTALLED IN ENGINES ON 269 SERIES HELICOPTERS PER LYCOMING SI 1180B. INSTALLED SCHWEIZER PLUG, PN 269A5513.SDR 95ZZZX6053Crankcase · crackedINSPECTION FOUND CRACK IN CRANKCASE STARTING AT TOP CASE FLANGE BOLT DOWN UNDER ENGINE DATA PLATE, THEN DOWN BETWEEN NR 3 AND NR 5 CYLINDERS. CRACK IS 8 INCHES LONG. LEFT ENGINE HAD A CRACK SAME AREA 96 HOURS AGO.SDR 95ZZZX6522Nut · detachedAIRCRAFT WAS IN-FLIGHT, RT ENGINE WAS ROUGH. AFTER LANDING, FOUND NR 6 CYLINDER CONNECTING ROD END CAP HAD COME OFF DUE TO ROD BOLT NUT BECAME LOOSE THEN SHEARED BOLT.SDR BTHA95002Crankcase · crackedDURING ANNUAL INSPECTION, FOUND CRANKCASE CRACKED FROM EDGE OF NR 2 CYLINDER FLANGE TO FORWARD CORNER AT CYLINDER BASE STUD. EDDY CURRENT INSPECTION VERIFIED CRACK TO BE SUBSURFACE. VISUAL INSPECTION SHOWED NO CRACKING ON INSIDE OF CASE. THE CRACK WAS APPROSDR 95ZZZX5883Lifter · failureINSPECTION FOR ENGINE MAKING METAL FOUND LIFTERS AND CAMSHAFT FAILURE. LIFTER P/N SA628488, P/N SA646277.SDR 95ZZZX6932Bolt · failedCRANKCASE THROUGH-BOLT WAS TORQUED TO THE MANUFACTURER'S SPECIFICATIONS. THE NEXT DAY, FOUND IT IN TWO PIECES. SUBMITTER STATED THIS IS THE SECOND NEW BOLT TO DO THIS. BROKE AT O-RING GROOVE.SDR 95ZZZX5946Connecting Rod · brokenNR 6 CONNECTING ROD FRACTURED APPROXIMATELY 2 INCHES BELOW PISTON SKIRT. BREAK SHOWED EVIDENCE OF PROGRESSION OVER TIME. FINAL FRACTURE WAS APPROXIMATELY ONE-HALF THE DIAMETER OF THE ROD WITH SOME MINOR CORROSION EVIDENT ALONG THE BEGINNING OF THE CRACK. ARSDR 95ZZZX5759Crankcase · crackedRIGHT CRANKCASE HALF FROM PARTING SURFACE LOWER NR 3 BOLT HOLE HAS 1 EACH .25 INCH CRACK FROM BOLT HOLE TO PARTING SURFACE, AND 1 EACH 1.850 INCH CRACK FROM BOLT HOLE INTO CASE WEBBING. SUBMITTER CANNOT DETERMINE THE CAUSE OF CRACK. NOTE: THE PROPELLER GOVESDR 95ZZZX6415Connect Rod · bolts corrodedNEW BOLTS, TWO SETS. RECEIVING INSPECTION FOUND CONNECTING ROD BOLTS WITH CORROSION PRESENT.SDR 95ZZZX5646Through-Bolt · brokenWHILE DOING AN INSPECTION, FOUND THE FRONT TOP THROUGH-BOLT BROKEN AT THE THREADED AREA LEFT SIDE OF ENGINE NR 6 CYLINDER. FOUND THE BROKEN END OF THE BOLT WITH THE NUT ON IT, IN THE ENGINE COMPARTMENT. NO RECORD OF BOLT CHANGE.SDR 95ZZZX5773Rod Bolt · wrong partIT IS NOT UNCOMMON TO FIND THE LONGER LW 75061 ROD BOLTS THAT ARE CALLED OUT IN THE LATEST O-360 TEXTRON LYCOMING PARTS BOOK MIS-MATCHED WITH THE CONNECTING RODS. THE EARLIER RODS, SUCH AS THE 74502 ROD, REQUIRE A SHORTER CONNECTING ROD BOLT (LW 74644). UNFOSDR 95ZZZX6395Connect Rod · failedRIGHT ENGINE, NR 6 CONNECTING ROD FAILED IN-FLIGHT, BROKEN AT CRANKSHAFT END. TT SMOH, APPROXIMATELY 1,200 HOURS, LOG BOOKS INDICATE ROD WAS 'YELLOW TAGGED' FOR THAT OVERHAUL; THEREFORE, PART TT UNKNOWN. SUBMITTER RECOMMENDS ON RECIP ENGINES OF THIS POWER ANSDR 95ZZZX4553Stud · failedFOLLOWING OVERHAUL, ENGINE WAS PUT IN SERVICE. AT 593 HOURS, CHANGED OUT THE NR 5 CYLINDER AND FOUND NOTHING THAT WOULD HAVE BEEN ALARMING OR INDICATIVE OF WHAT MIGHT HAPPEN. AT 680 HOURS SMOH, THE NR 7 CYLINDER BROKE ALL THE HOLD-DOWN STUDS, LIFTED .50 INCHSDR 95ZZZX5227Crankcase · crackedFOUND CRANKCASE CRACKED AT NR 4 CYLINDER PAD. CRACK IS CLEAR THROUGH CYLINDER PAD BOSS AND PROTRUDES DOWNWARDS ABOUT 5 INCHES TOWARD THE OIL FILLER MOUNTING HOLE. LEAKS OIL. ENGINE REPLACED.SDR 95ZZZX5639Through-Bolt · brokeNEW THROUGH-BOLT BROKE AFTER TORQUED TO 67 FEET/POUND. BROKE AT O-RING GROOVE IN CENTER OF BOLT. SUBMITTER SUSPECTS POSSIBLE HYDROGEN EMBRITTLEMENT FROM PLATING.SDR CA951114010Roller · damaged(CAN)ENGINE RECEIVED AT R&O DUE TO METAL CONTAMINATION. INSPECTION DURING TEARDOWN REVEALED ONE COUNTERWEIGHT ROLLER (#5 CHEEK) DISLODGED FROM COUNTERWEIGHT. COUNTERWEIGHT FOUND RETAINED TO CRANKSHAFT WITH ONLY ONE PIN. DISLODGED PIN HAD BECOME JAMMED BETWEEN SDR 95ZZZX5598Crankcase · crackedCRACK IN THE CRANKCASE ON THE FORWARD LOWER PORTION OF NR 5 CYLINDER, RUNNING THROUGH THE LOWER FORWARD CYLINDER MOUNTING STUD.SDR 96ZZZX5406Plunger Assy · failedENGINE REPORTED AS RUNNING ROUGH AT FULL POWER. DURING RUN-UP TO CONFIRM SQUAWK, NR 2 EXHAUST VALVE WAS SUCKED INTO CYLINDER AND PUSHED THROUGH CYLINDER HEAD. A VALVE SPRING AND RETAINER WAS PUSHED THROUGH ROCKER BOX COVER. DISASSEMBLY REVEALED PLUNGER ASSYSDR 95ZZZX4188Bearing · brokenINSPECTION OF OIL FILTER ELEMENT DURING ROUTINE OIL CHANGE AND LARGE AMOUNT OF ALUMINUM SHAVINGS AND MINOR AMOUNT OF STEEL (MAGNETIC) PARTICLES WERE FOUND. ENGINE WAS REMOVED FROM AIRCRAFT AND DISASSEMBLED. FOUND REAR INTERMEDIATE MAIN BEARING HAD BROKEN INTSDR 95ZZZX5796Connect Rod · failedRIGHT ENGINE, NR 6, CONNECTING ROD WENT THROUGH ENGINE CASE. REMOVED AND REPLACED ENGINE. CAUSE UNKNOWN AT THIS TIME.SDR 95ZZZX4511Bearing · wornENGINE DISASSEMBLED AT 190 HRS TSO FOR INSP DUE TO PROP STRIKE. UNUSUAL WEAR ON ROD BEARINGS AND MAIN BEARINGS WAS OBSERVED. THE ROD BEARING WEAR WAS FOUND ONLY ON THE ROD-SIDE BEARINGS WHILE THE CAP-SIDE BEARINGS APPEAR NORMAL. ALL THE WORN BEARINGS SHOW HSDR 95ZZZX4510Bearing · wornENGINE DISASSEMBLED AT 190 HRS TSO FOR INSP DUE TO PROP STRIKE. UNUSUAL WEAR ON ROD BEARINGS AND MAIN BEARINGS WAS OBSERVED. THE ROD BEARING WEAR WAS FOUND ONLY ON THE ROD-SIDE BEARINGS WHILE THE CAP-SIDE BEARINGS APPEAR NORMAL. ALL THE WORN BEARINGS SHOW HSDR 95ZZZX4488Crankshaft · brokeCRANKSHAFT - REGROUND 18 HOURS EARLIER. AT OVERHAUL, BROKE AT REAR THROW WITH LOSS OF POWER. GRINDING MAY HAVE BEEN THE WORK OF AN AUTOSHOP WITH NO INTEREST IN FILLET RADIUS. ENGINE RAN SMOOTH UNTIL THEN. SECOND REPORTED BROKEN CRANKSHAFT OF SAME TYPE.SDR 95ZZZX4392Crankcase · crackedDURING A ROUTINE INSPECTION, THE LEFT ENGINE CRANKCASE WAS FOUND CRACKED AT THE NR 4 CYLINDER MOUNTING PAD. AD 77-13-22 DOES NOT APPLY TO THIS CRANKCASE DUE TO MARKINGS. SUSPECT FATIGUE, WEAK DESIGN. SUBMITTER SUGGESTS INSPECTING AREA CLOSELY AT 100-HOUR INSDR 95ZZZX4017Camshaft · wearCAMSHAFT WAS PURCHASED FROM AIR SUPPORT INTERNATIONAL, INC. CAMSHAFT WAS OVERHAULED AT AIRCRAFT SPECIALTIES SERVICES, FAA REPAIR STATION DD2R764K. CAMSHAFT SHOWED SIGNS OF PREMATURE WEAR. SUBMITTED BY EXECUTIVE FLYERS 141 SCHOOL LP8S302Q.SDR 95ZZZX4013Camshaft · wearCAMSHAFT PURCHASED FORM AIR SUPPORT INTERNATIONAL, INC. CAMSHAFT WAS OVERHAULED AT AIRCRAFT SPECIALTIES SERVICES, FAA REPAIR STATION DD2R764K. CAMSHAFT SHOWED SIGNS OF PREMATURE WEAR. SUBMITTED BY EXECUTIVE FLYERS 141 SCHOOL LP8S302Q.SDR 95ZZZX4012Camshaft · wearCAMSHAFT WAS PURCHASED FROM AIR SUPPORT INTERNATIONAL, INC. CAMSHAFT WAS OVERHAULED AT AIRCRAFT SPECIALTIES SERVICES FAA REPAIR STATION DD2R764K. CAMSHAFT SHOWED SIGNS OF PREMATURE WEAR. SUBMITTED BY EXECUTIVE FLYERS 141 SCHOOL LP8S302Q.SDR 95ZZZX4350Lifter · brokenDURING ANNUAL INSPECTION, NR 2 CYLINDER WAS REMOVED DUE TO LOW COMPRESSION. WHEN CYLINDER WAS REMOVED, THE CUP PORTION OF THE EXHAUST SOLID LIFTER FELL TO THE FLOOR. THE CUP SECTION OF THE LIFTER HAD BROKEN COMPLETELY OFF. ALL LIFTERS HAD BEEN REPLACED DURISDR CA951102003Stud · cracked(CAN)ON INSPECTION FOUND #1 CYLINDER AFT BOTTOM HOLD DOWN STUD BROKEN. CYLINDER WAS REMOVED AND ALL HOLD DOWN NUTS REPLACED. NO RECORD OF NUT REPLACEMENT AT ENGINE OVERHAUL OR CRANKCASE REPAIR FACILITY .SDR 95ZZZX4390Rod Bolt · brokenROD BOLT BROKE SUDDENLY WITH NO WARNING. ENGINE WAS RUNNING SMOOTH UNTIL ROD BROKE.SDR 95ZZZX3987Crankshaft · brokeNEW V.A.R. CRANKSHAFT BROKE BETWEEN NR 2 AND NR 3 CYLINDERS. THIS CRANKSHAFT HAD A TOTAL TIME OF 442 HOURS SINCE NEW. FAILURE WAS IN-FLIGHT AND PILOT MADE SAFE LANDING WITH NO DAMAGE TO AIRCRAFT OR PROPERTY. THIS APPEARS TO BE A DEFECTIVE CRANKSHAFT.
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