JASC 8550
Service difficulty reports · 669
Reports filed under 8550 · Reciprocating Engine Oil System, 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 = '8550' 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 = '8550' 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 98ZZZX1060Breather · frozenPILOT REPORTED LOW OIL PRESSURE WARNING SOUNDED LEFT ENGINE, AND GAUGE INDICATED ZERO OIL PRESSURE AT APPROXIMATELY 'GEAR-UP' TIME OF TAKEOFF. LANDING WITHOUT INCIDENT. TROUBLESHOOTING DETERMINED TO BE FROZEN BREATHER. THIS SYSTEM HAS AIR/OIL SEPARATOR. PISDR 98ZZZX777Piston · mismanufacturedOIL FILTER ADAPTER LONGITUDINAL HOLE IN PISTON DOES NOT INTERSECT HOLES DRILLED THROUGH THE CIRCUMFERENCE. NO OIL IS ALLOWED TO THE FILTER ELEMENT. REPLACED PISTON, OPERATION RETURNED TO NORMAL. SUBMITTER STATED PART WAS NOT MADE ACCORDING TO PRINT.SDR AU980335Filter · faulty(AUS) OIL FILTER THREADED END INCOMPATIBLE WITH THE THREADS ON THE OIL FILTER HOUSING.SDR 99ZZZX767Filter Adapter · looseNEW AIRCRAFT HAD OIL LEAK; FOUND THE RETAINING BOLTS FOR THE OIL FILTER ADAPTER TO BE 'FINGER' TIGHT. RE-TORQUED BOLTS PER OHM SPECS. LEAK CHECK SATISFACTORY.SDR 98ZZZX837Scavenge Pump · failedACFT UNDERWENT SCHEDULED 50-HR INSP. UPON POST-INSP AND RUN AND LEAK TEST, OIL NOTED COMING FROM TURBOCHARGER OUTLETS AND WASTEGATE SEAL DRAIN. FURTHER INVESTIGATION REVEALED SCAVENGE PUMP FAILURE. UPON DISASSY, END BEARING FOUND LOOSE CAUSING A BREAK IN SESDR 98ZZZX471Oil Filter · failedFOUND FILTER PLEATS POPPED OUTWARD ALLOWING OIL TO PASS THROUGH UNFILTERED. FOUND AUXILIARY OIL FILTER INSTALLATION HOSES CROSSED REVERSING THE OIL FLOW THROUGH THE FILTER. RECOMMEND ONE-TIME INSPECTION OF HOSE ROUTING ON SAME TYPE INSTALLATIONS.SDR AU980776Pump · fod(AUS) ENGINE OIL PUMP BODY CRACKED DUE TO INGESTION OF FOREIGN OBJECT INTO THE OIL PUMP. ADDITIONAL DAMAGE CAUSED TO DRIVE SHAFT (CRACKED), IMPELLERS AND ACCESSORY HOUSING. SUSPECT FOD WAS A STOP PIN FROM A MAGNETO.SDR PNSA971215Oil Line · looseAFTER ENGINE SHUTDOWN, PILOT NOTICED OIL DRIPPING FROM COWLING. MAINTENANCE SECURED OIL RETURN LINE FROM NR 5 CYL, LEAK CHECK OK.SDR 97ZZZX5178Oil Filter · crackedCRACKS WERE FOUND ON ENGINE OIL FILTERS (NEW FILTERS). THIS CRACK IS ON THE BASE FLANGE INSIDE OF BASE SEAL AND OUTBOARD OF INLET HOLES. SUSPECT CAUSE MIGHT BE ASSEMBLY DEFECT. SUBMITTER RECOMMENDED EMERGENCY AD ISSUE ON THIS OIL FILTER AND REPLACE IF FOUNDSDR 97ZZZX5137Adapter · failedAS PART OF THE 600-HOUR INSPECTION OF OIL FILTER ADAPTER REQUIRED BY SEB 93-1R1, THE RELIEF VALVE SEALING 'DISK' WAS FOUND ASKEW AND NOT SEALING PROPERLY. FURTHER INSPECTION REVEALED THE SPRING THAT HOLDS THE 'DISK' IN PLACE HAD BEEN CHAFED MORE THAN HALFWAY SDR 98ZZZX230Oil Filter · bulgedFILTER REPLACED 11-24-97. ENGINE GROUND CHECKED. 0IL PRESSURE NORMAL. ON NEXT FLIGHT, OIL WAS LOST OVERBOARD. ON EXAMINATION, FILTER WAS FOUND ELONGATED AND BULGED. FILTER TAKEN TO HAGGLIN MOTOR FOR INVESTIGATION. CONCLUSION WAS BULGING LIFTED FILTER OFFSDR 98ZZZX41Impeller · wrong partENGINE DISASSEMBLED FOR MAJOR OVERHAUL AND DISCOVERED OIL PUMP HAD PREVIOUSLY BEEN ASSEMBLED WITH A LW18110 DRIVEN IMPELLER WHICH IS CARBURIZED, AND A NR 60746 DRIVE IMPELLER WHICH IS NOT NITRIDE HARDENED. THIS IS CONTRARY TO THE INSTRUCTIONS IN LYC SB 524. SDR 97ZZZX4949Bypass Spring · failedOIL FILTER BYPASS SPRING FOUND BROKEN AND DISC FOUND UNDER ENGINE OIL PRESSURE VALVE. ENGINE HAD NO OIL PRESSURE AFTER START-UP. BYPASS DISC FOUND UNDER ENGINE OIL PRESSURE RELIEF VALVE PREVENTING ENGINE FROM DEVELOPING ANY PRESSURE.SDR 97ZZZX4667Tube Assy · chafedLEFT ENGINE LOST OIL. ENGINE SHUT DOWN, LANDED IN JOHNSTOWN, PA. FOUND HOLE CHAFED THROUGH UNFEATHERING ACCUMULATOR TUBE ASSY AT FIRE WALL. REMOVED AND REPLACED LINE, SERVICED ENGINE WITH OIL. OPS CHECKED GOOD.SDR AU971338Plug · loose(AUS) ENGINE OIL DRAIN PLUG NOT TIGHTENED OR LOCKWIRED FOLLOWING AN OIL CHANGE. PERSONNEL/MAINTENANCE ERROR.SDR 97ZZZX4755Housing · leakA FLAW IN THE CASTING NEAR THE UPPER LEFT HAND CORNER OF THE OIL FILTER ADAPTER MOUNTING PAD WAS ALLOWING OIL UNDER PRESSURE TO LEAK THROUGH THE CASTING. THE ENGINE HAD BEEN OVERHAULED BY LYCOMING 50 HOURS PRIOR TO THE OCCURRENCE.SDR 97ZZZX4466Engine · misoverhauledDURING ANNUAL INSPECTION, COULD NOT FIND VALID SIGN-OFF FOR AD 81-18-04 OR AD 96-09-10 (OIL PUMP AD). PARTS NOTIFICATION NR 96-083 DATED 5-5-97. NO PAPER WORK FOR RETURNING PARTS TO SERVICE (YELLOW TAGS) OR AD COMPLIANCE WAS FOUND. ENGINE WAS TORN DOWN AND SDR 97ZZZX4186Drain Tube · chafedNR 2 CYLINDER 71737 ROCKER DRAIN TUBE CHAFED THROUGH ABOUT 90 PERCENT OF WALL THICKNESS BY BOTTLE RETAINER (PIN EASILY PENETRATED 'PAPER-THIN' WALL') 68761 TUBES (3 OF EACH) HAD SUBSTANTIAL WEAR MARKS, AGAIN, TRIM BOTTLE RETAINER. NOTE: TY WRAPS ARE NOT A GOOSDR 97ZZZX4185Drain Tube · chafedNR 2 CYLINDER 71737 ROCKER DRAIN TUBE CHAFED THROUGH ABOUT 90 PERCENT OF WALL THICKNESS BY BOTTLE RETAINER (PIN EASILY PENETRATED 'PAPER-THIN' WALL') 68761 TUBES (3 OF EACH) HAD SUBSTANTIAL WEAR MARKS, AGAIN, TRIM BOTTLE RETAINER. NOTE: TY WRAPS ARE NOT A GOOSDR 97ZZZX3988Oil Valve · corrodedDURING FLIGHT, OIL PRESS WAS INDICATING LOW (10-30 PSI) AND ERRATIC. AFTER LANDING, DURING TAXI, OIL PRESS INDICATION WAS 0-10 PSI. PRESS XMITTER REMOVED AND A DIRECT READING GAUGE CONFIRMED THAT ON-BOARD INDICATIONS WERE CORRECT. PRESS REGULATOR AND BYPASSSDR 97ZZZX3745Separator Tank · leakWHILE TROUBLESHOOTING AN OIL LEAK, SUBMITTER FOUND AIR OIL SEPARATOR TANK CRACKED AROUND THE INLET TUBE COMING FROM THE TURBOCHARGER. TWO CRACKS WERE RUNNING PARALLEL ALMOST 350 DEGREES AROUND THE TUBE. CRACKS HAD BEEN MASKED BECAUSE SOMEONE PREVIOUSLY COVERSDR 97ZZZX3996Oil Line · looseAIRCRAFT WAS EN ROUTE FROM PWM TO LGA AT 8,500. PASSENGER NOTICED OIL ON LEFT FLAP. ADVISED PILOT, PILOT MONITORED OIL PRESSURE. PRESSURE STARTED TO FALL. SECURED ENGINE AND LANDED AT MHT. NO INCIDENT. INVESTIGATION FOUND LOOSE HOSE NUT ON OIL PRESSURE SDR 97ZZZX3491Dip Stick · errorTHIS ENGINE AT OIL CHANGE REQUIRES TEN QUARTS OF OIL TO BRING DIPSTICK TO READ EIGHT QUARTS.SDR 97ZZZX3693Oil Tube · dislodgedDISCOVERED AT MAJOR OVERHAUL. NEW VAR CRANKSHAFT INSTALLED 1985, ACCUMULATED 1,550 HOURS. FOUND NR 3 OIL TUBE (INSIDE SHAFT) HAD DISLODGED AND WORKED ITS WAY OUT AND HAD PRACTICALLY CUT THE BEARING IN HALF. SUBMITTER BELIEVES THE VAR CRANKSHAFT HAS AS MANY SDR 97ZZZX3411Filter · leaksOIL FILTER WAS INSTALLED ON 6-28-97. NOTED AT THE TIME THAT THE LOCKING TAB WAS NEARLY FLAT AGAINST THE BOWL OF THE CANNISTER, SUCH THAT THE TAB HAD TO BE BENT SLIGHTLY TO ADMIT .032 INCH SAFETY WIRE. NO LEAKS WERE FOUND AFTER A GROUND RUN-UP. AFTER 3 HOURSSDR 97ZZZX3488Screen · required changeREMOVED ENGINE FOR OVERHAUL WITH APPROXIMATELY 2,100 HOURS SINCE LAST OVERHAUL. OIL SUCTION SCREEN SAFETY WIRE WAS PAINTED WITH ENGINE PAINT. ENGINE LAST OVERHAUL WAS 10-71. MANY ANNUALS AND OIL CHANGES WITHOUT THIS SCREEN BEING PULLED. VERY POOR MAINTENANSDR 97ZZZX3480Oil Pump · defectiveDURING AD RESEARCH, AD 96-09-10, ENGINE WAS SUBJECT TO VERIFICATION. ENGINE MANUFACTURED (FIRST TEST FLIGHT) OCTOBER, 1978, AND HAS 330 HOURS TOTAL TIME SINCE NEW. THIS ENGINE WAS NOT LISTED IN BULLETIN 524 UNDER AEIO - SO LYCOMING WAS CONSULTED AND ADVISED SDR PNSA970704Oil Pressure · low indicationLOW OIL PRESS ON CLIMBOUT, RETURNED TO RAMP. COULD NOT DUPLICATE PROBLEM, SUBSEQUENT FLIGHTS OK.SDR 97ZZZX3704Relief Spring · wornACCESSORY CASE WAS PARTIALLY DISASSEMBLED FOR CLEANING DURING MAJOR ENGINE REPAIRS. OIL PRESSURE RELIEF VALVE SPRING WAS WORN ON OUTSIDE OF COILS WHERE THEY RIDE ON INSIDE OF RELIEF VALVE PLUNGER. COILS WERE WORN TO .034 INCH FROM .050 INCH NEW DIAMETER. THSDR AU970769Valve · worn(AUS) ENGINE OIL FILTER VALVE STUCK - FILTER COLLAPSED AND FILTER HOUSING BASE GASKET BLEW OUT - SUSPECT CAUSED BY COLD MORNING STARTS (VISCOUS OIL) AND POOR STARTING TECHNIQUESSDR AU971360Cap · loose(AUS) RH ENGINE OIL FILLER CAP LOOSE. OIL LEAKING FROM ENGINE.PERSONNEL/MAINTENANCE ERROR.SDR AU970674Filter · separated(AUS) DURING FILTER REMOVAL, THE THREADED ADAPTER SECTION OF THE FILTER WAS RETAINED IN THE ENGINE HOUSING - THE FILTER/ADAPTER IS A SINGLE UNIT WITH THE ADAPTER BEING PART OF THE FILTER WHICH DOES NOT BELONG TO THE ENGINESDR 97ZZZX2885Sump · crackedAFTER A PHASE INSPECTION AND AFTER ENGINE RUN-UP, THE ENGINE WAS CHECKED FOR OIL LEAKS BEFORE COWLING INSTALLED. A LEAK WAS NOTED BEHIND THE RIGHT REAR ENGINE MOUNT BRACKET. A CLOSER LOOK WAS MADE AND A CRACK WAS FOUND (ABOUT 2.50 INCHES LONG). OIL SUMP WASSDR CA970620007Relief Valve · misaligned(CAN) A NEWLY INSTALLED ENGINE HAD OIL PRESSURE PROBLEMS. THE LOW OIL PRESSURE AT IDLE WAS FOUND TO BE CAUSED BY THE OIL PRESSURE ADJUSTING SCREW BEING MISALIGNED WITH THE HOUSING CAUSING THE VALVE NOT TO SEAT SQUARELY. THE REPLACEMENT OF THE OIL PRESSURE RELISDR CA970610001Oil Pump · drive sheared(CAN) PROPELLER FEATHERED AND ENGINE SHUTDOWN IN FLIGHT. AIRCRAFT RETURNED TO BASE. POST FLIGHT INSPECTION FOUND THE OIL PUMP DRIVE GEAR SHEARED.SDR 97ZZZX3171Drain Plug · defectiveDURING ROUTINE INSPECTION, FOUND OIL DRAIN O-RING NOT SEATED PROPERLY.SDR 97ZZZX3170Drain Plug · defectiveFOUND SEAL ON OIL SIDE OF DRAIN SWOLLEN CAUSING THE QUICK DRAIN TO OOZE AND NOT DRAIN PROPERLY.SDR AU970557Pipe · holed(AUS) RH ENGINE NO6 CYLINDER ROCKER OIL DRAIN LINE CHAFED ON BAFFLE STAY - ROCKER DRAIN PIPE ATTACHMENT HOSES PERISHED -PERSONNEL/MAINTENANCE ERRORSDR 97ZZZX2789Adapter · threads brokenCESSNA OIL FILTER TOWER INSPECTED IAW AD 96-12-22. FOUND ONE THREAD BROKEN AWAY .6250 INCH LONG. NO DAMAGE TO INTERNAL THREADS OF OIL PUMP HOUSING.SDR 97ZZZX3789Washer · wornDURING C/W SB 600-131, SUBSTANTIATED BOTH SCAVANGE OIL PUMPS WERE DUE IMMINENT FAILURE. REPLACED PARTS REQUIRED.SDR AU970332Elbow · loose(AUS) LH ENGINE OIL PRESSURE LINE 45 DEGREE ELBOW FITTING LOOSE AND LEAKING - FITTING IS LOCATED ON THE CABIN HEAT EXCHANGER EXHAUST MANIFOLDSDR 97ZZZX1841Oil Pan · corrodedCORROSION FOUND INSIDE OF THE BOTTOM OF THE OIL PAN AROUND THE PLUG BOSS. THIS WAS DUE TO MOISTURE CONDENSING AND COLLECTING AT THE BOTTOM OF PAN. IF THE AIRCRAFT IS GOING TO SIT FOR WEEKS ON END;SUBMITTER SUGGESTS ONE-QUARTER OF THE OIL BE DRAINED AS THIS WSDR 97ZZZX1821Filter Adapter · plug looseWHEN THE OIL FILTER WAS REMOVED DURING AN ENGINE INSPECTION, DISCOVERED A PLUG THAT WAS PRESSED INTO AN UNUSED OIL PASSAGE IN THE OIL FILTER ADAPTER HAD COME LOOSE. THIS ALLOWED THE OIL FILTER TO BE BYPASSED AND FOR UNFILTERED OIL TO BE PUMPED IN THE OIL SYSTSDR CA970410001Valve Drain · broken nut(CAN) AFTER FLIGHT THE PILOT NOTICED OIL DRIPPING FROM THE ENGINE COWL. INSPECTION FOUND THE SLUDGE DRAIN VALVE ASSEMBLY SEAL RETAINING NUT BROKEN ALLOWING THE CONTROL SHAFT ASSEMBLY TO DROP OUT OF THE SLUDGE DRAIN VALVE ASSEMBLY RESULTING IN LOSS OF ENGINE OISDR AU970550Pump · faulty(AUS) ENGINE OIL PUMP FAULTY - AD/LYC/81 AMDT3 HAD NOT BEEN COMPLIED WITH - SINTERED IRON IMPELLER STILL FITTEDSDR 97ZZZX2047Retainer · failedNR 4 CYLINDER INTAKE VALVE RETAINER FAILED. INSPECTED ALL OTHER CYLINDERS, FOUND NO OTHER DEFECTS.SDR 97ZZZX1872Adapter · damagedDURING ENGINE CHANGE, THE OIL FILTER ADAPTER WAS REMOVED AND THE THREADS WERE FOUND DAMAGED AS DEPICTED IN AD 96-12-22. THERE WERE NO SIGNS OF LEAKAGE, BUT THE BREAKAWAY TORQUE APPEARED TO BE LOW. SUBMITTER STATED THIS IS THE THIRD ADAPTER OF THIS TYPE FOUNDSDR 97ZZZX1194Line · failedINFLIGHT FAILURE OF THE TURBOCHARGER OIL RETURN LINE BETWEEN THE TURBOCHARGER HOUSING AND A SMALL RESERVOIR CAN LOCATED UNDER THE ENGINE. THE AIRCRAFT LOST 9 QUARTS OF OIL INFLIGHT AND WAS LANDED WITHOUT INCIDENT. THE OIL RETURN LINE WAS FOUND WITH A CRACK RSDR 97ZZZX1313Engine · low pressureAT ANNUAL INSPECTION, ENGINE OIL PRESSURE WAS BELOW SPECIFIED LIMITS. CAUSE UNKNOWN.SDR 97ZZZX1053Filter · burstOIL FILTER BURST AT START-UP. GASKET FORCED FROM GROOVE. ENGINE LOST ALL OIL. FILTER 'DOMED OUT' AT BOTH ENDS. ALL OIL PASSAGEWAYS IN ENGINE AND OIL COOLER OK. PRESSURE RELIEF VALVE IN ENGINE OK. SUSPECT FILTER BYPASS.
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