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 CA961216018Crankshaft · 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 TSDR CA961216017Crankshaft · 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 TSDR CA961216016Crankshaft · 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 TSDR CA961216015Crankshaft · 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 TSDR CA961216014Crankshaft · 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 TSDR CA961216013Crankshaft · 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 TSDR 97ZZZX6190Bolt · failedROD BOLT NUTS BACKED OFF AND CONNECTING ROD BOLTS BROKE. SUSPECT CAUSE WAS IMPROPER INSTALLATION OF CONNECTING ROD BOLT NUTS. RECOMMENDATION: RE-VISIT OR RE-ISSUE LYCOMING SI NR 1106D, DATED 6-9-72.SDR 97ZZZX520Cylinder · rod failedON LEVEL FLIGHT AT 6,000 MSL, ENGINE BACKFIRED AND LOSS OF OIL PRESSURE. ENGINE SHUT DOWN AND RETURN TO PTK.SDR 97ZZZX421Cam · rivets loosePILOT EXPERIENCED LOSS OF POWER AND MADE EMERGENCY LANDING. FOUND VALVES NOT FUNCTIONING PROPERLY. REMOVED PLUG IN NOSE CASE. INSP OF CAM RING FOUND RIVETS MISSING AND OTHERS LOOSE. ALL 35 RIVETS WERE SHEARED AND ONLY 5 STILL THERE.SDR CA970203009Crankcase · cracked(CAN) PILOT REPORTED AN OIL LEAK, INSPECTION FOUND THE CRANKCASE WAS CRACKED ALONG THE #6 CYLINDER FLANGE.SDR 97ZZZX447Connect Rod · failedAIRCRAFT WAS FLYING 5 MILES NW OF OGD WHEN PILOT REPORTED SUDDEN OIL PRESSURE DROP. UPON INSPECTION AFTER LANDING, THE ENGINE CASE WAS FOUND CRACKED. AFTER REMOVING CYLINDERS FOUND THAT NR 4 CONNECTING ROD WAS BROKE OFF AT THE CAP. IT IS UNKNOWN WHETHER THISDR 96ZZZX6099Counter Weight · crackedPULLED SUCTION SCREEN FOLLOWING OIL CHANGE, FOUND BROKEN PIECE OF SNAP RING, P/N 71906. REMOVED SUMP, FOUND COUNTER WT NR 5 SNAP RING AFT SIDE INBOARD BROKE AND COUNTER WT CRACKED AT BUSHING HOLE. SCREEN WAS PULLED FOLLOWING FAILURE OF NR 5 CYL (DROPPED EXHASDR 96ZZZX5901Dowel · looseFOUND DOWEL FOR CRANKSHAFT SPLINE BUSHING IN SUMP AT OIL SCREEN. UPON TEAR DOWN FOUND ONLY 1 OF 3 DOWELS STILL IN CRANKSHAFT. BUSHING WAS STARTING TO TWIST IN BETWEEN CRANKSHAFT AND SPLINE BUSHING. NO OTHER INDICATION OF PROBLEMS. ENGINE RAN GOOD, FILTER WSDR 97ZZZX504Crankshaft · brokenENGINE QUIT IN-FLIGHT AND IT WAS DISCOVERED THE CRANKSHAFT HAD BROKEN IN TWO PLACES, JUST AFT OF THE FWD THRUST BEARING. RESEARCH OF LOGS SHOWS THAT THE AIRCRAFT WAS BELLIED 891 HOURS PRIOR TO THE CRANKSHAFT BREAKAGE, AT WHICH POINT THE BELLY WAS REPAIRED, A SDR 98ZZZX4467Camshaft · scoredA ROUTINE OIL CHANGE AND OIL FILTER INSPECTION REVEALS EXCESSIVE METAL. FURTHER INVESTIGATION FINDS THE CAMSHAFT HAS FAILED ON CERTAIN CAM LOBES. ENGINE IS REMOVED FROM SERVICE. SUBMITTER SUGGESTED POSSIBLE CAUSE AS DEFECTIVE PART.SDR 96ZZZX6107Connect Rod · failedAFTER DEPARTURE, OIL PRESSURE ON RIGHT ENGINE DROPPED. ENGINE BEGAN TO SMOKE POSSIBLE BLEED OIL FIRE AND SMOKE WERE NOTED. ENGINE WAS SHUT DOWN AND FEATHERED. NORMAL LANDING WAS MADE. DAMAGE TO AIRCRAFT RESTRICTED TO ENGINE AND PROP. FIRST INSPECTION REVESDR 96ZZZX6008Connect Rod · failedENGINE OPERATED 233 HOURS OVER MFG RECOMMENDED OVERHAUL TIME OF 1400 HRS. REF SB NR M91-8, 10JULY91. CONNECTING ROD FAILED IN NORMAL CRUISE AT 8,000 FEET ALTITUDE. ENGINE HAD A 100 HR INSPECTION WITHIN PREVIOUS 25 HRS OF OPERATION. COMPRESSION REPORTED 72/SDR 96ZZZX5838Plunger Assy · lifter brokenPILOT NOTICED OIL COMING FROM COWLING. INVESTIGATION REVEALED NR 1 CYLINDER EXHAUST VALVE TRAIN FAILURE, PUSH ROD BENT, AND HYDRAULIC LIFTER BROKEN. CAUSE UNKNOWN. EXHAUST VALVE TO GUIDE CLEARANCE OKAY.SDR JZBR13659Crankcase · brokenENGINE LOST MOST OF ITS OIL DUE TO A HOLE IN THE TOP OF THE CRANKCASE ABOVE THE CAMSHAFT LOBE FOR NR 1 CYLINDER. SUSPECT CAMSHAFT FOLLOWER FAILURE WHICH WEDGED ITSELF BETWEEN THE CASE AND CAMSHAFT CAUSING CASE FAILURE. (X)SDR 96ZZZX6098Rod Bolt · strippedROD BOLT APPEARS TO BE TOO SOFT. THREADS STRIPPED CAUSING NR 4 CONNECTING ROD CAP TO COME LOOSE MAKING CONTACT WITH CASE AND NR 3 PISTON. THIS CAUSED MAJOR DAMAGE TO ENGINE.SDR 96ZZZX5422Crankcase · failurePUSH ROD FAILURE RESULTED IN ENGINE STOPPING AND SUBSEQUENT CRANKCASE FAILURE. (ROD THROUGH CASE.) SUBMITTER SUSPECTS OIL PUMP FAILURE, ENGINE OVERHEAT.SDR 96ZZZX5926Connecting Rod · brokenPWN/AUG - FLT 32 - INBOUND, FLT CREW NOTICED FUEL FLOW FLUCTUATING, THEN PROP (RT ) FEATHERED. OIL OBSERVED COMING FROM INBD NOSE COWLING . UNEVENTFUL LANDING MADE AT AUG. INSP FND GOV DAMAGED, LT NOSE CASE FROM GOV PAD TO NR 6 CYL BROKEN AWAY. CAMSHAFT FNSDR 96ZZZX5925Camshaft · brokenPWN/AUG - FLT 32 - INBOUND, FLT CREW NOTICED FUEL FLOW FLUCTUATING, THEN PROP (RT ) FEATHERED. OIL OBSERVED COMING FROM INBD NOSE COWLING . UNEVENTFUL LANDING MADE AT AUG. INSP FND GOV DAMAGED, LT NOSE CASE FROM GOV PAD TO NR 6 CYL BROKEN AWAY. CAMSHAFT FNSDR 96ZZZX5404Crankcase · crackedAFTER REMOVAL OF CYLINDER NR 4 DUE TO A LEAKING EXHAUST VALVE, A 4 INCH CRACK WAS FOUND STARTING AT THE NR 2 MAIN JOURNAL. THIS CRACK STARTED AT THE BEARING SURFACE AND PROGRESSED TO THE INSIDE OF THE CASE BETWEEN CYLINDERS NR 2 AND 4. NO EVIDENCE OF A CRACKSDR 96ZZZX5448Crankshaft · brokenENGINE LOST POWER IN-FLIGHT. ACFT ABLE TO LAND AND TAXIED IN UNDER ITS OWN POWER. ENG INSP REVEALED PROP COULD BE MOVED 15 TO 20 DEGREES WITHOUT RESISTANCE. WITH PLUGS REMOVED, FND THE FRONT 4 PISTONS WOULD MOVE IN THAT 15 TO 20 DEGREES, BUT NR 1 AND NR 2 CSDR 96ZZZX5409Connect Rod · failedROD FOR CYLINDER NR 6 FAILED AT CRANKSHAFT END. UNABLE TO TELL IF ROD OR ROD BOLTS FAILED BECAUSE OF DAMAGE.SDR 97ZZZX190Lifter · spalledDURING ANNUAL INSPECTION FOUND STEEL IN OIL FILTER. ENGINE DISASSEMBLED, ALL LIFTERS AND CAMSHAFT BADLY SPALLED. THESE COMPONENTS HAD A TT OF 383 HRS SINCE REGRIND AND AEROLUBE PROVIDED BY AIR SUPPORT INTERNATIONAL.SDR 96ZZZX5337Crankcase · crackedON 10-2-96 MAINTENANCE WAS NOTIFIED OF AN OIL LEAK ON THE ENGINE. UPON FURTHER INVESTIGATION, A CRACK WAS NOTED ABOVE THE TOP FORWARD CYLINDER HOLD DOWN STUD OF THE NR 5 CYLINDER. SUSPECT CAUSE OVERTORQUEING OR TORQUEING SEQUENCE. SUBMIMTTER STATED CLOSE INSDR CA961115002Crankshaft · cracked(CAN) ENGINE RECEIVED FOR REPAIR FOR A CRANKSHAFT CRACKED AT THE MAIN BEARING JOURNAL EXTENDING FROM THE FRONT EXPANSION PLUG SEAT IN A SPIRAL (ANTI CLOCKWISE FROM THE FRONT) TO APPROXIMATELY HALF WAY BETWEEN THE FORWARD THRUST FACE AND THE CROSS FEED OIL HOLESDR CA961023005Crankcase · cracked(CAN) THE CRANKCASE WAS FOUND CRACKED ON THE TOP LEFT SIDE BEHIND THE LEFT MAGNETO, THE CRACK WAS APPROXIMATELY 6" LONG.SDR 97ZZZX3468Bolt · crackedDURING ENGINE INSPECTION, FOUND NR 6 CYLINDER STUD AND CASE THROUGH-BOLT CRACKED.SDR 96ZZZX5112Lifter · failedLIFTER FAILED AT NR 4 CYLINDER CAM LOBE. LOBE DAMAGED AND PEENED ON CAMSHAFT. CRANKSHAFT PILOT END, BENT OVER LIMITS. FLANGE ON CRANKSHAFT OUT OF LIMITS ON RUN-OUT. FINDINGS RESULT OF ENGINE, TIME EXPIRED INSPECTION.SDR CA961007005Piston Rod · broken(CAN) ROD FAILURE AT CRANKSHAFT, ROD BROKE IN HALF. ROD EXITED THROUGH TOP OF CRANKCASE REAR LEFT SIDE.SDR 96ZZZX4932Crankshaft · crackedENGINE RECEIVED FOR OVERHAUL DUE TO CRACK IN REAR COUNTERWEIGHT. UPON INSPECTION, FOUND THE REAR COUNTERWEIGHT CRACKED IN THE 4-1/2 ORDER FLYWEIGHT LINER AREA OF CRANKSHAFT. THIS SAME CRANKSHAFT WAS FOUND CRACKED IN THE SAME AREA AT THE PREVIOUS OVERHAUL, 900SDR CA960916010Crankshaft · cracked(CAN) PILOT REPORTED AN OIL LEAK IN THE PROP AREA AND AN OIL SMELL IN THE CABIN. INVESTIGATION REVEALED THAT THE CRANKSHAFT ASSEMBLY HAD A CRACK FROM THE PROP FLANGE GOING IN A SPIRAL AFT OF THE FLANGE ON THE CRANKSHAFT. THE CRACK WAS APPROXIMATELY 4.5" LONG ASDR 96ZZZX5028Link Rod · brokenIN CRUISE POWER, LT ENGINE STARTED RUNNING ROUGH. FOUND NR 7 CYLINDER LINK ROD BROKEN.SDR 96ZZZX5624Through-Bolt · brokenINSPECTION FOUND LOWER THROUGH-BOLT IN NR 2 CYLINDER BASE BROKEN.SDR 96ZZZX4765Lifter · spalledCYLINDER REMOVED FOR LOW COMPRESSION. FOUND BOTH LIFTERS STARTING TO SPALL. CHECKED ALL LIFTERS, 9 OF 12 LIFTERS SHOWED EVIDENCE OF SPALLING. FACTORY NEW LIFTERS (ALL 12) INSTALLED. CAM APPEARS OK. THIS ENGINE FACTORY REMANUFACTURED, 6/95.SDR CA960910006Stud · broken(CAN) DURING CRUISE A SLIGHT OIL LEAK WAS NOTICED ON THE #2 ENGINE COWLING, A LOSS OF 3 TO 4 INCHES OF MANIFOLD PRESSURE AND A DROP IN OIL PRESSURE. THE ENGINE WAS SHUTDOWN. POST FLIGHT INSPECTION FOUND THE #2 CYLINDER HAD SEPARATED FROM THE CRANKCASE, DUE TO SDR 96ZZZX4751Camshaft · brokeENGINE WAS REMOVED FOR CAM FAILURE AT 299.20 TSMOH. A RE-GROUND CAM WAS INSTALLED BY CRS. AT 2,195.50 TSMOH, ENGINE WAS REMOVED FOR OVERHAUL AND DISASSEMBLY REVEALED CAM HAD BROKEN IN 2 PIECES WHERE THE PROP GOVERNOR GEAR P/N LW-15274 IS INSTALLED AND CRACKSDR 96ZZZX4232Crankshaft · crackedTHE AIRCRAFT COMPLETED AN UNSCHEUDLED ON AIRPORT EMERGENCY LANDING DUE TO OIL SPRAYING ON THE WINDSHIELD. THE CRANKSHAFT WAS FOUND CRACKED AT THE RADIUS BY THE PROPELLER FLANGE. (APPROXIMATELY 1.75 INCH VISIBLE.)SDR AU961193Crankcase · cracked(AUS) RH ENGINE RH CRANKCASE HALF CRACKED IN AREA OF NO1 CYLINDER LOWER AFT THROUGH BOLTSDR 96ZZZX4709Crankcase · crackedCRANKCASE CRACKED IN ON-CRITICAL AREA AS DEFINED BY M90-17. CRACK IN EXCESS OF 2 INCHES EXTENDING FROM NR 2 CYLINDER STUD UP THROUGH TOP OF CRANKCASE TOWARD MAGNETOS. ENGINE REMOVED FOR REPAIRS TO CRANKCASE BY OVERHAUL SHOP.SDR 96ZZZX4383Stud · stretchENGINE WAS BEING REPAIRED FOR SEVERAL BROKEN CYLINDERS, BASE STUDS, AND LOOSE NUTS. MECHANIC RECEIVED 36 BRAND NEW STUDS FROM THREE DIFFERENT VENDORS IN TCM PACKAGING. UPON TORQUING TO THE REQUIRED MINIMUM TORQUE VALVE, A TOTAL OF 12 STRETCHED. THEY WERE ALSDR CA960826044Crankcase · cracked(CAN) DURING A SCHEDULED INSPECTION A CRACK WAS FOUND ON THE RH ENGINE BETWEEN #2 AND #4 CYLINDERS, APPROXIMATELY 4" LONG PROPAGATING FROM THE #4 CYLINDER FLANGE. THE ENGINE WAS REPLACED.SDR 96ZZZX4402Crankshaft · screws failedAFTER TAKEOFF, ENGINE STOPPED. AIRCRAFT CRASH LANDED IN A FIELD. AIRCRAFT DESTROYED BY POST-FIRE. INVESTIGATION FOUND CRANKSHAFT GEAR ASSEMBLY HUB SOCKET SCREWS SHEARED. P/N 401337. TSO: 700 HOURS. TT: UNKNOWN.SDR CA960724403Main Bearing · seized(CAN) CRANKCASE ASSEMBLY RECEIVED FOR INSPECTION AFTER REPORTS OF HIGH OIL TEMPERATURE, LOW OIL PRESSURE AND STIFFNESS OF PROP ROTATION. CRANKCASE DISMANTLED, CLEANED AND INSPECTED. INSPECTION FOUND THE #5 MAIN BEARING SEIZED. FAILURE TYPICAL OF OIL STARVATIONSDR 96ZZZX3875Crankcase · studs failedPILOT REPORTED HEARING A 'BOOM' AND A DECREASE IN MANIFOLD PRESSURE DURING FLIGHT. UPON INSPECTION, NR 6 CYLINDER OF RIGHT ENGINE WAS FOUND TO BE AWAY FROM CRANKCASE PAD. FIVE OUT OF EIGHT CYLINDER HOLD-DOWN STUDS HAD BROKEN OFF. TWO THROUGH STUDS, AND ONE SDR AU961065Bearing · spalled(AUS) ENGINE NO3 MAIN BEARING SPALLED - BEARING HAD ROTATEDSDR 96ZZZX4007Stud · corrodedDURING ENGINE TEAR DOWN FOLLOWING ACCIDENT, CRANKCASE HALF NUT ON NR 4 BEARING STUDS SEIZED RESULTING IN STUD BACKING OUT OF CRANKCASE. UPON REMOVAL, FOUND BOTH NR 4 BEARING CRANKCASE STUDS HEAVILY CORRODED/RUSTED. ALSO, HAD GLASS BEADS IN STUD RECEPTACLES.
Back to JASC 8520