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.
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 CA051205007Crankshaft · corroded(CAN) THE CRANKSHAFT OF THIS AIRCRAFT WAS INSPECTED DUE TO A FAILURE OF A CRANKSHAFT OF ANOTHER AIRCRAFT IN THE FLEET (INTERNAL CORROSION). UPON REMOVAL OF THE FRONT CRANK PLUG AND CLEANING OF THE CRANKSHAFT. IT WAS DISCOVERED THAT THE URETHABOND COATING WAS PSDR CA051202004Crankcase · crackedMULTIPLE CRACKS FOUND ON RIGHT CRANKCASE THRU BOLT BOSS JUST UNDER THE UPPER REAR HOLE OF THE NR 1 ALTERNATOR MOUNTING BRACKET.SDR 2006FA0000771Crankshaft · failedAPPROX 5 MILES INTO FLIGHT, FELT A SURGE FROM RT ENG, AC STARTS YAWING TO RT. PROCEEDED TO FEATHER PROP WHICH WAS SUCCESSFUL AT THIS TIME, NOTICED ENGINE STOPPED TURNING. ADVISED PASSENGERS OF SITUATION IN PREP FOR AN EMERGENCY LANDING. ON GROUND MAINT WAS SDR CA051206006Crankshaft · crackedENGINE WAS IN FOR OVERHAUL. CRACK FOUND IN CRANKSHAFT WITH MPI. NO RECORD OF BLADE STRIKE.SDR CA051104015Stud · broken(CAN) 7 OF THE 8 STUDS ON NR 2 CYL BROKE ALLOWING THE CYL TO SHIFT CAUSING A VIBRATION. 5 MIN AFTER TAKEOFF THE PILOT NOTED A VIBRATION AND RETURNED FOR A NORMAL LANDING. INSPECTION OF THE LOG BOOK IT WAS NOTED THAT NR2 CYL HAD BEEN REMOVED 375 HRS PRIOR BY TSDR CA051025001Rod Bearing · broken(CAN) DURING INSPECTION PROGRAM OF PULLING A CYLINDER AND PERFORMING AN INTERNAL VISUAL (REPETITIVE 500 HRS), A MECHANIC NOTICED IMPACT MARKS ON THE PISTON SKIRT, ELSEWHERE INSIDE CASE. NOTICED A CHUNK OF METAL IN BOTTOM OF THE CASE APPROX 2INCHES BY .2500 INCSDR CA051101003Crankshaft · corroded(CAN) ENGINE WAS REMOVED FROM THE AIRCRAFT AND SENT TO AN OVERHAUL FACILITY FOR AN INSPECTION DUE TO A PROP STRIKE. DURING THE INSPECTION OF THE CRANKSHAFT, IT WAS NOTICED THAT THE URETHANE INTERNAL COATING (PID) WAS BLISTERING. FURTHER INSPECTION OF THE AREA SDR 2005FA0001482Crankshaft · crackedCRANKSHAFT DEVELOPED CRACK BEHIND PROP FLANGE .3333 - .5 AROUND SHAFT IN FLIGHT, LEAKED OIL STEADY ON GROUND RUN. (EA21200603317) (K)SDR CA060119002Case · crackedIN FLIGHT AT LOW CRUISE SETTING, PILOT REPORTED HEARING A BANG, FELT A "SHUTTER", AND EXPERIENCED A LOSS OF POWER IN THE LEFT ENGINE. ENGINE WAS SHUT DOWN, PROP FEATHERED, AND AIRCRAFT LANDED SAFELY. THE ENGINE CASE WAS FOUND CRACKED. THE ENGINE WAS REPLACESDR 2005FA0001552Connecting Rod · brokenCONNECTING ROD TO CRANKSHAFT BEARING FAILED RESULTING IN ROD DISCONNECTING FROM CRANKSHAFT AND SUBSEQUENT CASE PENETRATION AND ENGINE STOPPAGE.SDR 2005FA0001516Bearing · defectiveDURING ENGINE DISASSEMBLY FOR ROUTINE OVERHAUL, IT WAS NOTED THAT SOME NR 3 MAIN BEARING SURFACE MATERIAL HAD RELEASED FROM THE BEARING SHELL. NO OTHER DEFECTS WERE NOTED RELATIVE TO THIS OCCURRENCE. (K)SDR AU510002155Crankshaft · brokenCRANKSHAFT BROKEN COMPLETELY THROUGH AT NR 1 CRANKPIN JOURNAL.SDR 2005FA0001301Lifter · brokenUPON COMPLYING WITH SB, VALVE GUIDE INSPECTION, FOUND LIFTER BODY PN 72877 BROKEN. VALVE GUIDE REVEALED NO SIGNS OF STICKING. (K)SDR 2005FA0001368Camshaft · wornAT ANNUAL INSPECTION METAL WAS FOUND IN OIL FILTER. ENGINE WAS TORNDOWN, CAMSHAFT AND LIFTER BODIES WERE DAMAGED. CAMSHAFT AND LIGTER BODIES WERE PURCHASED FROM VENDOR, 1/4/93 AND INSTALLED IN ENGINE 4/8/93 IAW 2000 HOUR TBO. FAILURE OCCURED, TSO 800 HR. ISDR CA050901004Connecting Rod · broken(CAN) SUSPECT OIL STARVATION TO NR 3 CONNECTING ROD DUE TO MOVEMENT OF NR 2 INTERMEDIATE MAIN BEARING IN CRANKCASE. ENGINE NOT FULLY DISASSEMBLED AT THIS TIME. ENGINE BOTTOM END BEYOND REPAIR.SDR 2005FA0001323Crankshaft · failedAPPARENT CRANKSHAFT FAILURE: JUST AFTER TAKEOFF ENGINE STARTED VIBRATING VIOLENTLY. SHUTDOWN AND LANDED SAFETLY. ENGINE WAS SPLIT IN HALF. PROP WAS ANGLED DOWN AS FRONT HALF OF ENGINE WAS ANGLED DOWN. (K)SDR 2005FA0001237Connecting Rod · brokenNR 3 CONNECTING ROD PENETRATED CASE. ENGINE TSO 848 HRS. LAST ENGINE O/H 06/10/1964 OR 41 YEARS AGO. MANUFACTURER RECOMMENDS 12 YEARS IAW SIL 98-9.SDR 2005FA0001272Crankcase · crackedOPERATOR COMPLAINT OF SMALL OIL LEAKS IN CRUISE FLIGHT. CLEANED ENGINE AND RAN, TO INSPECT FOR OIL LEAKS. AFTER EXTENSIVE VISUAL INSPECTION AND DYE PENETRANT INSPECTIONS (3) CRACKS IN THE CRANKCASE WERE DISCOVERED. (2) CRACKS WERE NOTED EXTENDING FROM TOP FSDR CA050829004Crankcase · cracked(CAN) ON INSPECTION, CHECKING FOR OIL LEAK, A CRACK IN THE CRANKCASE WAS FOUND. FRONT LT SIDE FORWARD OF NR 2 CYLINDER.SDR HYI2005F00006Bolt · shearedLT PROPELLER FAILED TO TURN ON START, MAINTENANCE FOUND CRANKSHAFT LARGE ATTACH BOLTS SHEARED AND GEAR DISLODGED FROM CRANKSHAFT. MAINTENANCE REMOVED AND REPLACED THE ENGINE AND RETURNED THE AIRCRAFT TO SERVICE. (NE01200505271) (K)SDR HYI2005F00005Connecting Rod · unserviceableAT 3000 FT, ON APPROACH, LT ENGINE BEGAN TO RUN ROUGH, PILOT PERFORMED FLOW CHECK, ALL ENGINE INSTRUMENTS APPEARED NORMAL, BOOST PUMPS TO LOW AS A PRECAUTIONARY. LT ENGINE CONTINUED TO RUN ROUGHER THEN SHUTDOWN, PILOT FEATHERED LT PROPELLER, LANDED WITHOUT INCSDR AU510001863Crankshaft · damagedENGINE CRANKSHAFT COUNTERWEIGHT HANGER BLADE HOLES OUT OF ROUND.SDR 2005FA0001075Bushing · wornMAGNETO IDLER GEAR SHAFT BROKE, THE BREAK WAS CAUSED BY A WORN BUSHING ON THE GEAR/SHAFT P/N'S 76091 & 76283 THAT DRIVES IT. THIS IS THE SECOND TIME THIS SHAFT BROKE. TOTAL TIME SINCE OVERHAUL 230 HOURS.SDR CA050810004Camshaft · worn(CAN) DURING A ROUTINE INSPECTION, THE OIL FILTER WAS CUT OPEN AND EXAMINED FOR METAL CONTAMINATION IAW MAINTENANCE INSTRUCTIONS. THE FINDINGS WERE TAKEN FOR FURTHER ANALYSIS. IT WAS DETERMINED THAT THE ENGINE WOULD NEED TO COME OFF WITHIN 50 HRS. 28.8 HRS LATSDR CA050724002Crankcase · crackedAFTER LANDING FROM A ROUTINE COMPANY FLIGHT, THE MAINTENANCE ENGINEER NOTED MORE THAN NORMAL OIL ON THE LT REAR COWLING. UPON FURTHER INVESTIGATION, A 3 INCH CRACK WAS DETECTED ON THE CRANKCASE HALF STARTING FROM THE ENGINE DRIVEN FUEL PUMP BOSS TO THE CRANKCSDR CVU2005F00002Lifter · wornSMALL METAL FLAKES KEPT RE-APPEARING IN THE OIL SCREENS. FOUND WORN CAM NR 5 AND NR 6 CYLINDER INTAKE VALVES. ENGINES REMOVED FOR REPAIR. USE MFG ENGINE OIL ADDITIVE FROM TIME OF OVERHAUL. RUN ENGINE FREQUENTLY. (K)SDR CVU2005F00001Camshaft · wornSMALL METAL FLAKES KEPT RE-APPEARING IN THE OIL SCREENS. FOUND WORN CAM NR 5 AND NR 6 CYLINDER INTAKE VALVES. ENGINES REMOVED FOR REPAIR. USE MFG ENGINE OIL ADDITIVE FROM TIME OF OVERHAUL. RUN ENGINES FREQUENTLY. (K)SDR CA050724001Crankshaft · shearedCRANKSHAFT SPLIT NEXT TO THE NR 3 MAIN BEARING JOURNAL. FAILURE NEXT TO THE NR 4 CONNECTING ROD. CRANKSHAFT THEN BROKE INTO 3 PIECES AND PUNCTURED THE CRANKCASE ABOVE THE SUMP. ENGINE TEARDOWN RESULTS: A SCRAP CRANKCASE AND NR 3 CYLINDER ALSO SCRAP DUE TO DSDR CA050804003Line · clogged(CAN) EXCESSIVE AMOUNTS OF AN UNIDENTIFIED SEALANT WAS USED ON THE SPLIT-LINE CAUSING THE SEALANT TO SQUEEZE INTO THE ENGINE. A LOSS OF TORQUE WAS FOUND ON THE THRU-BOLTS AND CYLINDER BASE NUTS. THE OIL PICK-UP WAS CLOGGED WITH THE LOOSE SEALANT.SDR CA050803007Pushrod · broken(CAN) NR 2 CYL EXHAUST ALUMINUM PUSH ROD BROKEN NEAR THE TOP FITTING.SDR CA050720003Stud · crackedDURING AIRCRAFT 100HR INSPECTION, A SMALL CRACK WAS FOUND RUNNING FROM THRU BOLT TO A CYLINDER HOLD DOWN STUD ON REAR HALF OF POWER SECTION CASE BETWEEN NR 3 AND NR 4 CYLINDERS. ENGINE REMOVED FROM SERVICE FOR REPAIRS.SDR CA050705003Crankcase · cracked(CAN) DURING A MAINTENANCE INSPECTION TO TROUBLESHOOT AIRCRAFT, OIL LEAK, MAINTENANCE DISCOVERED A CRACK IN THE CRANKCASE. AERO-ENGINES INC OUT OF LOS ANGLES REBUILT THIS ENGINE, BUT I WAS UNABLE TO FIND THEM FROM THE MANUFACTURER DROP-DOWN LIST. THE NUMBER SDR 2005FA0000934Crankshaft · crackedTHE CRANK PIN OF THE REAR HALF CRACKED FROM THE CRANK PIN RADIUS THRU TO THE REAR MAIN BEARING RADIUS. AFTER CLEANING AND CLOSE EXAMINATION, IT IS OUR OPINION THAT THE CRACK ORIGINATED AT THE CRANK PIN RADIUS. MACHINE MARKS ON THE REMAINING PORTION OF THE RASDR CA050624003Piston Pin · failed(CAN) 4 CYLINDER PISTON PIN PLUG FAILED (BROKEN OFF) CAUSING HIGH AMOUNT OF ALUMINUM IN OIL FILTER, CAUSING LOSS OF OIL PRESSURE DURING CRUISE.SDR CA050527016Crankshaft · crackedTHE ENGINE WAS RETURNED TO CANADA FROM THE USA FOLLOWING REPAIR AND INSTALLED ONDHC-2 MK 1 AIRCRAFT. WHEN THE ENGINE WAS STARTED EXCESSIVE OIL LEAK WAS OBSERVED FROM THE AREA NEAR THE REAR OF THE PROPELLER HUB AND THE NOSE CASE OF THE ENGINE. THE PROPELLER ASDR CA050531001Main Bearing · failed(CAN) THE AIRCRAFT CAME IN WITH A REPORT OF LOW OIL PRESSURE. THE OIL FILTER WAS PULLED AND INSPECTED WITH NO FAULTS FOUND, THE OIL PRESSURE RELIEF VALVE WAS REMOVED, CLEANED, AND REINSTALLED. THE AIRCRAFT WAS RUN-UP AND FOUND TO BE OPERATING NORMALLY. AT THE SDR CA050614009Crankshaft · fractured(CAN) CRANKSHAFT FRACTURED AT NR 2 MAIN BEARING JOURNAL FILLET NEXT TO NR 3 CHEEK. FAILURE IS IN LINE WITH NR 2 CONNECTING ROD JOURNAL IN AREA WHERE CRANKSHAFT IS INSPECTED FOR SUB-SURFACE CRACKS BY UT. MAIN BEARINGS WERE POUNDED TO VERY THIN METAL PIECES. NSDR 2005FA0000951Connecting Rod · failedIN SLOW DESCENT FOR LANDING AT 3,000 FT AGL, SEVERE VIBRATION OCCURRED AND THEN WITHIN 30 SECONDS A LOUD BANG AND OIL COVERING WINDSHIELD AND SIDE WINDOWS. DIVERTED FLT ABOUT 5-6 MILES AWAY AND MADE SAFE LANDING AT AIRPORT. UPON INSPECTION, NR 2 ROD PENETRATEDSDR CA050609010Piston · broken(CAN) DURING FLIGHT, MOMENTARY DROP IN OIL PRESSURE WAS NOTED. DURING NEXT OIL CHANGE, SIGNIFICANT AMOUNTS OF METAL AND CARBON WERE NOTED IN OIL SCREEN. DUE TO HIGH LEVELS OF CARBON, IT WAS SUSPECTED THAT AN EXHAUST VALVE HAS FAILED. NR 1 CYLINDER WAS SUSPESDR 2005FA0000770Rod · brokenDURING CRUISE FLT, ENG BEGAN TO VIBRATE SEVERELY AND PILOT SHUTDOWN. TEARDOWN AND INVESTIGATION REVEALED THE NR 2 ROD BROKE 1/2 WAY BETWEEN PISTON AND CRANK. IT IS SUSPECTED THIS ENG ENCOUNTERED LIQUID LOCK AT SOME TIME CAUSING A BENT ROD THAT EVENTUALLY FAISDR 2005FA0000737Stud · failedNR 4 CYLINDER BASE STUD FAILED IN TENSION. NUT AND 30 PERCENT OF STUD LENGTH FOUND BETWEEN NR2 AND NR4 CYLINDERS ON THE INNER CYLINDER BAFFLE. NR 4 CYLINDER REMOVED AND REMAINING PARTIAL STUD REMOVED WITH STUD EXTRACTOR. INSTALLED NEW STUD, PN 50-15 AND RESDR 2005FA0000743Crankshaft · fracturedRT ENGINE STARTED RUNNING ROUGH, THEN STOPPED AND WENT INTO FEATHER. AC LANDED WITHOUT INCIDENT. UPON INVESTIGATION IT WAS FOUND THAT WHEN THE PROPELLER WAS ROTATED THE AFT CYLINDERS (NR 3, NR 4) PISTONS WOULD NOT MOVE NOR DID ANY ACCESSORIES ON THE BACK OF SDR 2005FA0000767Camshaft · brokenTHE LT ENGINE STOPPED IN CRUISE FLIGHT. AFTER INVESTIGATION IT WAS FOUND THE CAM HAD FAILED JUST FORWARD OF THE NR 5 AND NR 6 CYLINDERS AND CRACKED THE LT CASE HALF. TBO IS 1800HRS, COMPONENT TIME IS 1413.3 TSMOH.SDR CA050506008Main Bearing · delaminated(CAN) METAL FLAKES FOUND IN OIL SCREEN AND FILTER. AT ENGINE TEARDOWN, FOUND SL13885 FRONT MAIN BEARING DELAMINATED APPROX. 1 SQUARE INCH OF SURFACE.SDR 2005FA0000814Piston · crackedREMOVED CYLINDERS ON A FRESHLY OVERHAULED ENGINE PRIOR TO RUNNING AND FOUND A 3 INCH CRACK AROUND THE OIL RING LANDING. (K)SDR 2005FA0000727Lifter · spalledLIFTERS SPALLED ON 5/7/2005, BUT NO DAMAGE TO THE CAMSHAFT AT THAT TIME. 2/16/2005 LIFTERS SPALLED AGAIN CAUSING THE CAMSHAFT TO NEED REPLACEMENT. (K)SDR 2005FA0000672Crankshaft · failedENGINE WAS DISASSEMBLED AND INSPECTED DUE TO CRANKSHAFT FAILURE. FOUND NR3 CHEEK BROKEN. THIS FAILURE CAUSED EXCESSIVE DAMAGE TO THE CRANKCASE, CAMSHAFT, NR1 AND NR 2 CONNECTING ROD, AND THE ASSOCIATED TAPPET BODIES. CAUSE OF THE FAILURE COULD POSSIBLY BE ASDR 2005FA0000519Piston · brokenDURING A 100 HR INSPECTION, FOUND A SMALL PIECE OF METAL IN THE SUCTION SCREEN. NO METAL WAS FOUND IN THE FILTER, INSPECTED PIECE AND DETERMINED TO BE FROM A PISTON, REMOVED OIL SUMP AND FOUND SEVERAL MORE PIECES, LOOKED INTO CASE. FOUND THE SKIRT OF NR 3 PISDR CA050404009Crankcase · cracked(CAN) THE INITIAL PROBLEM WAS AN OIL LEAK FOUND DURING INSPECTION, AFTER SEVERAL ENGINE GROUND RUN-UPS, CRACK OF 2 INCHES FOUND FWD OF CYLINDER NR 5 ON CRANKCASE UPPER SECTION, ENGINE REMOVED AND SEND TO REPAIR SHOP.SDR GNB2005F00001Bolt · shearedRT ENGINE WOULD NOT TURN OVER. REMOVED RT STARTER ADAPTER. FOUND LARGE CRANKSHAFT GEAR NOT ATTACHED. FOUND ALL 6 ATTACH BOLTS SHEARED BUT CONNECTED TOGETHER WITH SAFETY WIRE. (SW01200503998) (K)
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