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 97ZZZX2968Crankcase · crackedENA - FLIGHT CREW REPORTED AN OIL LEAK NR 1 ENGINE. FOUND CRANKCASE CRACKED ABOVE NR 4 CYLINDER BASE. REMOVED THE ENGINE FOR REPAIR.SDR AU970628Crankshaft · cracked(AUS) ENGINE CRANKSHAFT CRACKED ON OIL SLINGER FACE - STARTER SHAFT HAD FOUR CRACKED TEETH - CAMSHAFT CRACKED ON GOVERNOR GEAR SPIGOT - CRANKSHAFT GEAR UNSERVICEABLE - TWO COUNTERWEIGHTS UNSERVICEABLE IAW M93-4 - CRANKCASE FRETTING ON BEARING SADDLES - SUSPECTSDR 97ZZZX3071Connect Rod · failedTHE TWO REAR OPPOSING CYLINDERS FAILED; THUS, PUNCHING HOLES INTO THE ENGINE BLOCK. THIS CAUSED SMOKE IN COCKPIT (CASE) FOLLOWED BY EMERGENCY LANDING.SDR AU970670Crankcase · cracked(AUS) ENGINE CRANKCASE CRACKED IN WEB BETWEEN CYLINDER BASE PADS -CRANKSHAFT GEAR SPALLED - CAM GEAR TEETH SPALLED - FUEL PUMP IDLER GEAR TEETH SPALLED - OIL PUMP HOUSING SCORED - STARTER RING GEAR CHIPPEDSDR 97ZZZX3193Crankshaft · rod failedCRANKSHAFT CONNECTING ROD BEARING FAILED CAUSING PISTON CONNECTING ROD TO FAIL WHICH LOCKED ENGINE. ENGINE COOLANT AND EXHAUST TEMPERATURE NORMAL PRIOR TO FAILURE. OIL INJECTION PUMP CHECKED OUT SATISFACTORILY.SDR CA970620012Valve Lifters · sticking(CAN) ENGINE FAILED TO DEVELOP FULL POWER ON TAKEOFF. INSPECTION FOUND THE VALVES AND LIFTERS STICKING. THE HEAD ASSEMBLY AND ALL THE LIFTERS WERE REPLACED.SDR AU970735Camshaft · spalled(AUS) ENGINE CAMSHAFT LOBES SPALLED AND VALVE LIFTER FACES DAMAGED -METAL CONTAMINATION OF OIL SYSTEM - LW16702 ADDITIVE USED AT EACH OIL CHANGESDR AU970734Camshaft · spalled(AUS) CAMSHAFT LOBES SPALLED AND VALVE LIFTER FACES DAMAGED - METAL CONTAMINATION OF OIL SYSTEM - LW16702ADDITIVE USED AT EACH OILCHANGESDR 97ZZZX2943Engine · seizedENGINE SEIZED AFTER 2 HOURS OF FLIGHT OPERATION ON INITIAL FLIGHT. ENGINE WAS STORED FOR 4 YEARS AND UNCRATED FOR 2 YEARS. ENIGNE SHOWED SIGNS OF CORROSION ON OUTPUT SHAFT OF GEARBOX. MANUFACTURER OF THE KIT SUPPLIED NO INFORMATION FOR LONG TERM STORAGE OF SDR AU970585Camshaft · cracked(AUS) ENGINE CAMSHAFT LOBE CASE HARDENING CRACKED - COUNTERWEIGHT BUSHINGS WORNSDR 97ZZZX2886Crankcase · crackedFOUND A CRACK IN THE LEFT CASE HALF BETWEEN NR 4 AND NR 6 CYLINDERS.SDR CA970609019Connecting Rod · broken(CAN) JUST AFTER CLIMB TO CRUISE ALTITUDE WHEN POWER WAS REDUCED A VIBRATION DEVELOPED AND A POWER LOSS WAS EXPERIENCED. THE PILOT NOTED HIGH OIL TEMPERATURE AND A LOSS OF OIL PRESSURE. AN EMERGENCY LANDING WAS CARRIED OUT IN A NEARBY FIELD. POST FLIGHT INSPECSDR 97ZZZX2797Crankcase · brokenRIGHT CRANKCASE LOWER FRONT ALTLERNATOR SUPPORT MOUNT LUG BROKE OUT OF CRANKCASE AND LEFT A HOLE 1.50 INCHES IN DIAMETER. CAUSE UNKNOWN. CREATED OIL LEAK WITH OIL ON WINDSHIELD DURING FLIGHT. REMOVED ENGINE AND INSTALLED LYCOMING REBUILT.SDR CA970903009Crankcase · cracked(CAN) A POST FLIGHT INSPECTION FOUND AN OIL LEAK UNDER THE NR2 CYLINDER. FURTHER INSPECTION FOUND A HAIRLINE CRACK APPROXIMATELY 8 INCHES LONG COMING OFF THE LOWER AFT NR2 CYLINDER BASE SHORT STUD. THE ENGINE WAS REMOVED FROM SERVICE. THE CRANKCASE HALVES WERESDR AU970581Camshaft · cracked(AUS) ENGINE CAMSHAFT LOBE CASE HARDENING CRACKED - FOUND DURING MAGNETIC PARTICLE INSPECTIONSDR AU970559Crankcase · out of limits(AUS) ENGINE CRANKCASE OUT OF LIMITS - FOUND DURING BULK STRIP DUE TO METAL CONTAMINATION - OTHER DEFECTS FOUND INCLUDED:-1. CAMSHAFT LOBE CASE HARDENING WORN AND LOBE CRACKED 2. THREE CYLINDERS UNSERVICEABLE WITH ONE CYLINDER WORN THROUGH THE HARD CHROME3. ISDR AU970583Crankcase · cracked(AUS) LH AND RH CRANKCASE HALVES CRACKED IN AREA OF NO1 AND NO4 CYLINDER BASE FLANGESDR AU970545Camshaft · deteriorated(AUS) CAMSHAFT LOBE CASE HARDENING BREAKING DOWN - CRANKSHAFT GEAR ALSO HAD BREAKING DOWN OF THE CASE HARDENINGSDR AU970542Camshaft · damaged(AUS) CAMSHAFT LOBE CASE HARDENING DAMAGEDSDR AU970534Camshaft · damaged(AUS) ENGINE CAMSHAFT LOBE DAMAGED - HARDENING BREAKING DOWNSDR AU970531Crankcase · cracked(AUS) ENGINE CRANKCASE CRACKED AND TUNNEL OUT OF LIMITS - CRANKSHAFT WORN BEYOND LIMITS - CAMSHAFT LOBES DAMAGEDSDR 97ZZZX2334Crankshaft · brokeCRANKSHAFT FAILED IN FLIGHT. BROKE THROUGH SHORT CHECK AREA BETWEEN ROD JOURNALS 3 AND 4. ENGINE FROZE IN FLIGHT.SDR AU970532Crankcase · cracked(AUS) ENGINE CRANKCASE LH HALF CRACKED IN AREA OF NO2 BEARING SADDLE -NO6 CONNECTING ROD CAP CONTAINED MULTIPLE CRACKING - SUSPECT CRACKING ORIGINATED FROM CORROSION PITTINGSDR 97ZZZX2068Stud · brokenDURING THE COURSE OF A NORMAL FLIGHT, PILOT NOTICED OIL LEAK ON LEFT ENGINE. AFTER FLIGHT, REMOVED ENGINE COWLING AND SAW 5 CYLINDER STUDS HAD BROKEN ON THE NR 1 CYLINDER. ON ENGINES OPERATED ON 1600 TBO'S, SUSPECT TIME IN SERVICE IS THE MAIN CAUSE FOR BREAKSDR AU970540Crankshaft · cracked(AUS) CRANKSHAFT CONTAINED TWO CRACKS IN NO6 CONNECTING ROD WEB - CRANKCASE BEARING TUNNEL OUT OF LIMITS - DAMAGE CAUSED BY HEAVY LANDING AND PROPELLER STRIKESDR 97ZZZX2578Crankcase · crackedTHIRTY HOURS AFTER REPAIR AND OVERHAUL OF ENGINE, CRANKCASE WAS FOUND TO HAVE A CRACK ON UPPER AREA ABOVE NR 2 CYLINDER (NOT A STUD HOLE CRACK) EXTENDING 1 INCH FORE AND AFT APPROX 1 INCH INBOARD OF CYLINDER MOUNT AREA. CYLINDERS ALSO FOUND NOT TO HAVE BEEN OSDR 97ZZZX2341Bearing · deterioratedAT INSPECTION, AN OIL CHANGE WAS BEING STARTED AND FOUND METAL SHAVINGS IN SUMP SCREEN AND FILTER. ENGINE WAS REMOVED AND SENT TO OVERHAUL FACILITY FOR TEAR DOWN AND INSPECTION. PRELIMINARY INSPECTION REPORT REVEALED FRONT MAIN CRANKSHAFT BEARING FAILURE.SDR AU970463Crankcase · worn(AUS) CRANKCASE MAIN BEARING JOURNALS AND OUTER SHELL SURFACES WORN EXCESSIVELY - CRANKSHAFT CENTRE MAIN JOURNAL BADLY SCORED - SUSPECT INCORRECT LINE BORING DURING OVERHAULSDR 97ZZZX2110Connecting Rod · detachedPILOT EXPERIENCED RPM DROP, LOSS OF OIL PRESSURE, AND ROUGHNESS. LANDED ON CITY STREET. NO AIRCRAFT DAMAGE. FOUND OIL APPARENTLY EXHAUSTED THROUGH CRANKCASE BREATHER. NR 4 CYLINDER PISTON BURNED THROUGH AFT SIDE UNDER RINGS .3750 INCH HOLE. NR 3 CYLINDER SDR CA970430002Connecting Rod · broken(CAN) ENGINE SHUTDOWN SHORTLY AFTER TAKEOFF. PILOT ATTEMPTED RESTART WHICH WAS UNSUCCESSFUL. AIRCRAFT RETURNED TO BASE. POST FLIGHT INSPECTION FOUND THE #1 CYLINDER CONNECTING ROD BROKEN AND JAMMED AGAINST THE CRANKCASE. THE #1 CYLINDER WAS ALSO CRACKED.SDR CA970521003Crankshaft · broken(CAN) SHORTLY AFTER CRUISE FLIGHT WAS ESTABLISHED THE RIGHT HAND ENGINE FAILED. THE ENGINE WAS SECURED AND THE AIRCRAFT RETURNED TO THE POINT OF DEPARTURE. POST FLIGHT INSPECTION REVEALED NO EXTERNAL DAMAGE, FLUID LOSS, ETC, HOWEVER THE PROPELLER COULD BE ROTASDR 97ZZZX1919Gear · failedNEW CRANKSHAFT GEAR P/N 653580 INSTALLED AT TIME OF ENGINE OVERHAUL IN CONJUNCTION WITH TCM SB CSB 94-4 IN KIT EQ6642. ENGINE FAILED APROXIMATELY 400.0 HOURS LATER. ENGINE DISASSEMBLY REVEALED THE POSSIBILITY THE GEAR BROKE FIRST CAUSING DAMAGE TO VALVE TRAINSDR CA970423016Tappet Body · spalled(CAN) ENGINE WAS REMOVED DUE TO METAL CONTAMINATION. #1 EXHAUST LOBE WAS WORN. TAPPET BODY WAS SPALLED, PITTED AND DEFORMED. CAMSHAFT LOBE WAS PITTED AND WORN DUE TO CONTACT BETWEEN LOBE AND LIFTER BODY (TAPPET). LOBE DISTRESS IS SECONDARY AND BEGINS AFTER LIFSDR 97ZZZX1948Stud · brokenDURING A 100-HOUR INSPECTION, MECHANIC NOTICED UPPER RIGHT (MOST AFT) STUD WAS BROKEN ON THE NR 4 CYLINDER PAD. THE STUD WAS BROKEN FLUSH WITH CYLINDER BASE. SUBMITTER SUSPECTS TIME IN SERVICE IS THE MAIN CAUSE FOR BREAKAGE OF THIS STUD. THERE IS NO WAY TO SDR 97ZZZX1947Crankcase · crackedDURING A 100-HOUR INSPECTION, MECHANIC HAD REMOVED THE NR 5 CYLINDER TO REPLACE A BROKEN STUD AND NOTICED CYLINDER HAD BEEN CHAFING. A CLOSER INSPECTION REVEALED THE CRANKCASE WAS CRACKED ON THE CYLINDER MOUNT PAD AROUND THE LOWER RIGHT STUD. ONE CRACK RAN ISDR 97ZZZX1917Lockplate · failedSEE LYCOMING O-235 SERIES PARTS CATALOG PC-302, FIGURE 3, INDEX 9. WHILE TROUBLESHOOTING EXCESSIVE MAGNETO DROP AND INSUFFICIENT STATIC RPM, DISCOVERED SCREW (STD 2213) HAD BACKED OUT OF CRANKSHAFT. THE LOCKPLATE EARS WERE FOUND IN THE OIL SUMP; THE CRANKSHAFSDR 97ZZZX1920Crankcase · crackedDURING ANNUAL INSPECTION, CRANKCASE AT NR 2 CYLINDER BASE STUD FOUND CRACKED FOUR INCHES LONG. THIS IS A LIGHT CASE ENGINE.SDR AU970382Split Pin · missing(AUS) NO4 AND NO5 CONNECTING RODS BOTH HAD ONE MISSING SPLIT PIN. PIECES OF SPLIT PIN FOUND IN OIL SYSTEM AND UNDER OIL PRESSURE RELIEF VALVE. INVESTIGATION AND MEASUREMENTS FOUND THAT UNDER CERTAIN CIRCUMSTANCES THE SPLIT PIN CAN CONTACT THE CYLINDER SKIRT.SDR AU970358Roller · worn(AUS) CRANKSHAFT COUNTERWEIGHT ROLLERS WORN UNEVENLYSDR 97ZZZX1950Bearing · deterioratedSECTIONS FROM THE CENTER OF THE BEARING APPEARED TO DETERIORATE OR DISSOLVE WITH NO APPARENT REASON. QUALITY OF BEARING IS IN QUESTION.SDR AU970418Crankshaft · failed(AUS) ENGINE CRANKSHAFT FAILED FROM CRACKING AT THE REAR FILLET RADIUS OF NO2 MAIN BEARING JOURNAL DUE TO FRICTION FROM CONTACT WITH THE BEARING SHELLSSDR AU970442Bolt · broken(AUS) ENGINE CRANKCASE THROUGH BOLTS (2OFF) SHEARED - TWO OPPOSITE SIDE THROUGH BOLTS LOOSESDR AU970409Crankcase · worn(AUS) ENGINE CRANKCASE TUNNEL OUT OF LIMITS - CAMSHAFT LOBES WORNSDR 97ZZZX3025Crankshaft · brokeCRANKSHAFT BROKE AT NR 1 ROD CHEEK RESULTING IN ENGINE FAILURE. ENGINE HAD A VAR CRANKSHAFT INSTALLED SN J159203. TT 3,295 HOURS.SDR 97ZZZX1879Rod Bearing · failedMETAL WAS FOUND IN THE SCREEN AND OIL FILTER AT THE 100-HOUR INSPECTION. THE CYLINDERS WERE REMOVED AND NO EVIDENCE OF METAL WEAR COULD BE FOUND. THE AIRCRAFT WAS PUT BACK INTO SERVICE AND FLOWN FOR APPROXIMATELY 50 HOURS. THE SCREENS AND FILTERS WERE AGAINSDR 97ZZZX1666Crankcase · misalignedA FACTORY OVERHAULED ENGINE WAS INSTALLED. ENGINE STARTED TO MAKE METAL. WHEN OIL WAS DRAINED, IT LOOKED LIKE ALUMINUM PAINT. AN OIL SAMPLE AND FILTER ELEMENT WERE SENT TO FACTORY. FACTORY REQUESTED THAT ENGINE BE REMOVED AND SENT IN FOR REPAIR. TIME ON ESDR CA970407004Camshaft · spalled(CAN) INSPECTION FOUND CAMSHAFT LOBES SPALLED AND TAPPET BODIES WERE PITTED. THE SPALLING ON THE LOBES WAS A RESULT OF CORROSION ON THE LOBES AND ON THE TAPPET BODIES. THE CORROSION WAS A RESULT OF LONG PERIODS OF ENGINE INACTIVITY AND NO EVIDENCE OF INHIBITINSDR 97ZZZX2045Crankshaft · fracturedCRANKSHAFT FRACTURED IN AFT CHEEK OF NR 2 THROW CAUSING ENGINE TO STOP. THE CRANKSHAFT WAS IN THE 0.010 INCH UNDER CONDITION. THE ORIGIN OF THE FRACTURE MAY HAVE BEEN THE AFT RADIUS OF THE NR 2 CRANK PIN. THE CRANKSHAFT WAS MAGNAFLUXED AT OVERHAUL. SUBMITTSDR AU970310Tappet Body · broken(AUS) NO3 CYLINDER INLET VALVE TAPPET BODY BROKEN - PUSHROD TUBES LIGHTLY DISPLACED AND LEAKING OILSDR AU970349Stud · broken(AUS) NO2 CYLINDER HOLD DOWN STUDS BROKEN - INVESTIGATION FOUND SIX CYLINDER BASE NUTS MISSING, THIRTY NUTS LOOSE AND ONLY TWELVE NUTS TO BE TIGHT - CRANKCASE PARTING SURFACES AND CYLINDER MOUNT PADS FRETTED - NUMEROUS INTERNAL WRENCHING. CYLINDER BASE NUTLAND
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