Lycoming O-360-A4M
Service difficulty reports · 559
Newest first. General aviation reporting is voluntary.
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 engine_model_key = 'O360A4M' 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 engine_model_key = 'O360A4M' 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 2026FA0000604Carburetor · faultedAFTER ONLY 360.49 TACH HOURS IN SERVICE FOUND THROTTLE GETTING STUCK BEFORE FULL THROTTLE STOP. SUSPECTED ACCELERATOR PUMP PLUNGER GETTING STUCK NOT ALLOWING THROTTLE ARM TO HIT FULL THROTTLE STOP.SDR 2026FA0000201Impulse Coupling · defectiveMAGNETO PULLED DURING ROUTINE MAINTENANCE TO CHECK FOR THE PRESENCE OF A CHAMPION MANUFACTURED IMPULSE COUPLING. ONE WAS FOUND INSTALLED AND THUS REMOVED FOR REPLACEMENT WITH A NEW ES3163 IMPULSE COUPLING. AFTER REMOVAL OF THE OLD IMPULSE COUPLING, I DISASSEMSDR 2025FA0000633Cylinder Head · crackedNR 4 CYLINDER HEAD CRACKED ACROSS COOLING FINS IN FLIGHT. CREW NOTICED LOSS OF POWER/SHUDDER.SDR 2025FA0000253Retaining Ring · defectiveDURING THE INSTALLATION OF THE RETAINING RING IT IMMEDIATELY BROKE. SENT THE STRUT TO ANOTHER SHOP THEY ATTEMPTED AND BROKE 2 MORE. SPOKE WITH PIPER TECHNICIAN AND RECEIVED THIS AS A RESPONSE. "AS PER OUR PHONE CONVERSATION YESTERDAY REGARDING THE INSTALLATIONSDR 2025FA0000204Carburetor · faultedFARGO, ND (FAR): N113SW, P28A, FAR-FAR, DECLARED AN EMERGENCY DUE TO A ROUGH RUNNING ENGINE. ACFT RETURNED TO FAR ARPT, LANDED, AND TAXIED TO THE RAMP WITHOUT FURTHER INCIDENT. 11/15/2024 2238Z. OVERHAULED CARBURETOR INSTALLED ON NOVEMBER 8TH, 2024.SDR 2024FA0000288Bulkhead · crackedFWD SPINNER BULKHEAD DEVELOPED CRACKS NEAR BOLTS, OBSERVED THAT CRACKS CONTINUE TO DEVELP AFTER REPLACEMENT, AFTER ONLY A FEW HOURS IN SERVICE.SDR 2024FA0000061Rivet · looseMAGNETO P/N 4371 S/N 22071298. LOOSE RIVETS FOUND ON IMPULSE COUPLING DURING 500 HOUR INSPECTION. REPLACED IMPULSE COUPLING WITH NEW.SDR 2024FA0000060Rivet · looseMAGNETO P/N 4371 S/N 22070051. LOOSE RIVETS FOUND ON IMPULSE COUPLING DURING 500 HOUR INSPECTION. REPLACED IMPULSE COUPLING WITH NEW.SDR 2024FA0000059Impulse Coupling · damagedMAGNETO P/N 4371 S/N 21030390. LOOSE RIVETS FOUND ON IMPULSE COUPLING DURING 500 HOUR INSPECTION. REPLACED IMPULSE COUPLING WITH NEW.SDR 2024FA0000058Rivet · looseMAGNETO P/N 4371 S/N 22010949. LOOSE RIVETS FOUND ON IMPULSE COUPLING DURING 500 HOUR INSPECTION. REPLACED IMPULSE COUPLING WITH NEW.SDR 2024FA0000057Rivet · looseMAGNETO P/N 4371 S/N 21091251. LOOSE RIVETS FOUND ON IMPULSE COUPLING DURING 500 HOUR INSPECTION. REPLACED IMPULE COUPLING WITH NEW.SDR 2024FA0000055Rivet · looseMAGNETO P/N 66GC20SFNN S/N 21080300. LOOSE RIVETS FOUND ON IMPULSE COUPLING DURING 500 HOUR INSPECTION. REPLACED IMPULE COUPLING WITH NEW.SDR 2023FA0000528Unknown · unknownPILOT REPORTS THAT THE INITIAL MAGNETO CHECK, THE ENGINE WAS RUNNING ROUGH, ON SECOND MAGNETO CHECK ENGINE SMOOTH OUT. ON TAKE OFF THE ENGINE POWER FLUCTUATED AND AIRCRAFT DID NOT MAKE POWER. PILOT ABORTED TAKE-OFF. WE PERFORMED A VISUAL INSPECTION OF THE ENGISDR 2023FA0000494Impulse Coupling · looseFOUND MAGNETO IMPULSE COUPLING RIVETS LOOSE AND REPLACED WITH NEW IMPULSE COUPLING.SDR 2023FA0000493Impulse Coupling · looseFOUND MAGNETO IMPULSE COUPLING RIVETS LOOSE AND REPLACED WITH NEW IMPULSE COUPLING.SDR 2023FA0000491Impulse Coupling · looseFOUND MAGNETO IMPULSE COUPLING RIVETS LOOSE AND REPLACED WITH NEW IMPULSE COUPLING.SDR 2023FA0000492Impulse Coupling · looseFOUND MAGNETO IMPULSE COUPLING RIVETS LOOSE AND REPLACED WITH NEW IMPULSE COUPLING.SDR 2023FA0000490Impulse Coupling · looseFOUND MAGNETO IMPULSE COUPLING RIVETS LOOSE AND REPLACED WITH NEW IMPULSE COUPLING.SDR 2023FA0000210Impulse Coupling · looseMAGNETO IMPULSE COUPLING RIVETS FOUND LOOSE, REPLACED COUPLING WITH NEW.SDR 2023FA0000208Impulse Coupling · looseMAGNETO IMPULSE COUPLING RIVETS FOUND LOOSE, REPLACED COUPLING WITH NEW.SDR 2023FA0000197Impulse Coupling · looseENGINE LEFT MAGNETO IMPULSE COUPLING RIVETS FOUND BENT, REPLACED IMPULSE COUPLING WITH NEW.SDR 2023FA0000196Impulse Coupling · looseENGINE LEFT MAGNETO IMPULSE COUPLING RIVETS FOUND LOOSE, REPLACED IMPULSE COUPLING WITH NEW.SDR 2023FA0000191Impulse Coupling · looseENGINE LEFT MAGNETO IMPULSE COUPLING RIVETS FOUND BENT, REPLACED IMPULSE COUPLING WITH NEW.SDR 2023FA0000131Impulse Coupling · defectiveMAGNETO IMPULSE COUPLING FOUND TO HAVE LOOSE RIVETS, REPLACED IMPULSE COUPLING WITH NEW.SDR 2023FA0000097Battery Pack · mismanufacturedA NEW ARTEX ELT WITH A NEW BATTERY WAS INSTALLED IN THE AIRCRAFT ON 8/16 AND THE BATTERY PACK LABEL HAD A MANUFACTURE DATE OF 5/16 AND AN EXPIRATION DATE OF 10/23. UPON ROUTINE INSPECTION ON 2/23, THE BATTERY DID NOT HAVE ENOUGH ENERGY TO PASS ITS INTERNAL TESSDR 2023FA0000339Attach Bolt · looseALL 4 BOLTS HOLDING VERTICAL STABILIZER SPAR TO REAR BULKHEAD WERE LOOSE. I SAW BLACK ALUMINUM DUST AROUND THE LOWER TWO DURING A ROUTINE INSPECTION. I REMOVED THE BOLTS AND DID NOT FIND SIGNIFICANT WEAR ON THE STRUCTURES. THE NUTS HAD TORQUE STRIPE ON THEM, CSDR 2023FA0000192Impulse Coupling · looseENGINE LEFT MAGNETO IMPULSE COUPLING RIVETS FOUND LOOSE, REPLACED IMPULSE COUPLING WITH NEW.SDR 2023FA0000056Impulse Coupling · defectiveENGINE LEFT MAGNETO MODEL 4371 S.N. 21090440, FOUND IMPULSE COUPLING RIVETS LOOSE. REPLACED IMPULSE COUPLINGSDR 2023FA0000054Rotor Shaft · defectiveENGINE RIGHT MAGNETO MODEL 4370 S.N. 21011028, FOUND ROTOR SHAFT SHEARED AT BALL BEARING. REPLACED MAGNETO WITH NEW.SDR 2023FA0000053Impulse Coupling · defectiveENGINE LEFT MAGNETO MODEL 4371 S.N. 21080467, FOUND IMPULSE COUPLING P/N M3163 TO HAVE LOOSE RIVETS. REPLACED WITH NEW.SDR 2023FA0000195Impulse Coupling · looseENGINE LEFT MAGNETO IMPULSE COUPLING RIVETS FOUND LOOSE, REPLACED IMPULSE COUPLING WITH NEW.SDR 2022FA0000749Impulse Coupling · looseDURING 500HR MAGNETO INSPECTION FOUND MAG 4371, S.N. 18071029 IMPULSE COUPLING RIVETS LOOSE. REPLACED IMPULSE COUPLING WITH NEW.SDR 2022FA0000748Impulse Coupling · looseDURING 500HR MAGNETO INSPECTION FOUND MAG 4371, S.N. 21080836 IMPULSE COUPLING RIVETS LOOSE. REPLACED IMPULSE COUPLING WITH NEW.SDR 2022FA0000747Impulse Coupling · looseDURING 500HR MAGNETO INSPECTION FOUND MAG 4371, S.N. 19080251 IMPULSE COUPLING RIVETS LOOSE. REPLACED IMPULSE COUPLING WITH NEW.SDR 2023FA0000194Impulse Coupling · looseENGINE LEFT MAGNETO IMPULSE COUPLING RIVETS FOUND LOOSE, REPLACED IMPULSE COUPLING WITH NEW.SDR 2022FA0000709Impulse Coupling · looseSLICK MAG P/N 4371, S.N. 21071346 FOUND LOOSE RIVETS ON IMPULSE COUPLING DURING INSPECTION, REPLACED IMPULSE COUPLING WITH NEW.SDR 2022FA0000710Impulse Coupling · looseSLICK MAG P/N 4371, S.N. 20120811 FOUND LOOSE RIVETS ON IMPULSE COUPLING DURING INSPECTION, REPLACED IMPULSE COUPLING WITH NEW.SDR 2022FA0000720Impulse Coupling · looseSLICK MAG P/N 4371, S.N. 18110538 FOUND LOOSE RIVETS ON IMPULSE COUPLING DURING INSPECTION, REPLACED IMPULSE COUPLING WITH NEW.SDR 2022FA0000719Impulse Coupling · looseSLICK MAG P/N 4371, S.N. 21030576 FOUND LOOSE RIVETS ON IMPULSE COUPLING DURING INSPECTION, REPLACED IMPULSE COUPLING WITH NEW.SDR 2022FA0000618Muffler · crackedNEWLY "OVERHAULED" MUFFLER CRACKED AFTER ONLY 81.3 HOURS OF OPERATION. VISIBLE INDICATION OF FAILURE WAS EXHAUST SOOT ON THE EXTERIOR OF THE MUFFLER SHROUD. MUFFLER WAS SOLD AS OVERHAULED WITH FORM 8130-3 AND WORK ORDER WHILE ALL PARTS APPEARED TO BE MANUFACTUSDR 2022FA0000722Impulse Coupling · looseSLICK MAG P/N 4371, S.N. 20060297 FOUND LOOSE RIVETS ON IMPULSE COUPLING DURING INSPECTION, REPLACED IMPULSE COUPLING WITH NEW.SDR 2022FA0000721Impulse Coupling · looseSLICK MAG P/N 4371, S.N. 21091251 FOUND LOOSE RIVETS ON IMPULSE COUPLING DURING INSPECTION, REPLACED IMPULSE COUPLING WITH NEW.SDR 2022FA0000736Bushing · unsecureENGINE STOP UNCOMMANDED WHILE TAXIING BACK TO MY HANGAR AT MY HOME AIRPORT. DISCOVERED AFTER REMOVING ACCESSORY CASE THAT THE IDLER GEAR BRONZE BUSHING FELL OUT AND CRANKSHAFT GEAR PIN/DOWEL WAS SHEARED OFF AND CRANKSHAFT GEAR AND BOLT WERE LOOSE AND THE TAB OSDR 2022FA0000183Carburetor · looseWHERE THE 2 HALVES MEET AND MATE. THE SCREWS HOLDING THEM TOGETHER WERE STILL LOCKED INTO POSITION BY SPECIAL DEVICES. BUT THE HALVES HAD SOME SLIGHT MOVEMENT THAT ALLOWED A SMALL AMOUNT OF FUEL TO LEAK OUT OF THIS POINT. I DID NOT DISASSEMBLE THIS UNIT, BUT ISDR FQAR20210603003Capacitor · brokenDURING RUN UP FOUND RT MAG DEAD, REMOVED MAG AND OPENED UP, FOUND TERMINAL ON CAPACITOR LEAD BROKEN, MAG HAD 138HRS SINCE A 500HR INSPECTION.SDR 2020FA0000530Control Cable · bindingAPPROXIMATELY 20 HOURS AFTER ANNUAL, THE VERNIER MIXTURE CONTROL BECAME VERY STIFF. THERE WERE NO KNOWN ANOMALIES OR WEAR NOTED AT THE ANNUAL. DUE TO THE AGE OF THE PART, IT WAS REPLACED. UPON, DISASSEMBLY THE VERNIER PART OF THE CONTROL APPEARED TO STILL WSDR 2020FA0000506Impulse Coupling · damagedRIVETS LOOSE ON IMPULSE COUPLING PAWLS ON SERIAL RANGE OUTSIDE OF S.B.2-19A.SDR 2020FA0000450Magneto · inoperativeFOUND LOOSE RIVETS ON MAGNETO S/N 18060695 IMPULSE COUPLING. SLICK SB2-19 WAS PREVIOUSLY COMPLIED WITH ON 10/30/2019 AND NEW UNAFFECTED IMPULSE COUPLING HAD BEEN INSTALLED AT THAT TIME. THE PROBLEM FOUND IS THAT NEW IMPULSE COUPLING UNAFFECTED BY SB2-19 STILSDR FQAR20200916008Muffler · deformedDURING AN INSPECTION BOTH MUFFLERS WERE FOUND WITH HEAT DEFORMATIONS UNDER THE CABIN HEAT SHROUD.SDR FQAR20200916009Muffler · deformedDURING AN INSPECTION BOTH MUFFLERS WERE FOUND WITH HEAT DEFORMATIONS UNDER THE CABIN HEAT SHROUD.
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