# Service difficulty reports: Lycoming IO-360-A3B6D A list on [Lycoming IO-360-A3B6D](https://openairdocs.org/engine/lycoming-io-360-a3b6d.md). Newest first. General aviation reporting is voluntary. - [SDR 2026FA0000810](https://openairdocs.org/sdr/2026FA0000810.md): Coil · damaged · Apr 15, 2026 · N9140X · Mooney M20J · Low Tension Coil > ENGINE CYLINDER NR 4 WAS EXPERIENCING INTERMITTENT MISFIRING. FOUND LT COIL WAS GROUNDING TO ITS MOUNT THROUGH A SMALL PINHOLE IN BOTTOM OF THE COIL CASE, ELECTROAIR STATED THAT IT WAS TESTED AND "THERE WAS NOTHING WRONG WITH IT". THE COIL WAS RETURNED AND A - [SDR 2025FA0000149](https://openairdocs.org/sdr/2025FA0000149.md): Rocker Cover · cracked · Mar 5, 2025 · N343DM · Mooney M20J · Reciprocating Engine Cylinder Section > ROCKER BOX COVER ON NUMBER 5 CYLINDER HEAD LEAKING OIL THROUGH HAIRLINE CRACK AT THE STAMPING MARK. THE LINE THAT UNDERLINES THE STAMPED "LYCOMING" LETTERS HAS A CRACK ALLOWING SLOW SEEPAGE OF ENGINE OIL AT ALL TIMES. - [SDR 2020FA0000508](https://openairdocs.org/sdr/2020FA0000508.md): Attach Bracket · broken · Sep 18, 2020 · N201ZT · Mooney M20J · Elevator Control System > THE TAIL TRIM ASSIST BRACKET BROKE ALONG THE MOUNTING FLANGE EDGE WHERE THE PUSH PULL ROD FOR ASSIST MECHANISM ATTACHES TO THE TAIL CONE. - [SDR 2019FA0000276](https://openairdocs.org/sdr/2019FA0000276.md): Servo · vapor lock · Aug 21, 2019 · N162JL · Amtr LANCAIR320 · Fuel Controlling System > ENGINE FUEL VAPOR LOCK SHORTLY AFTER TAKEOFF. - [SDR JZYR2017062714126](https://openairdocs.org/sdr/JZYR2017062714126.md): Crankshaft · broken · Jun 27, 2017 · N1021K · Mooney M20J · Reciprocating Engine Power Section > VERY LOUD POUNDING SOUND FROM THE CRANKCASE WHEN RUNNING. FOUND LARGE AMOUNTS OF FERROUS AND NON-FERROUS MATERIAL IN THE OIL FILTER, METAL AT THE SCREEN TO THE GOVERNOR, AND LARGE CHUNKS OF METAL IN THE OIL SUCTION SCREEN. ENGINE WAS REMOVED FROM THE AIRCRAFT - [SDR 2017FA0000230](https://openairdocs.org/sdr/2017FA0000230.md): Housing · cracked · May 1, 2017 · N91396 · Mooney M20J · Magneto/Distributor > DURING AN ANNUAL INSPECTION, FOUND DUAL MAGNETO HOUSING CRACKED AT BOTH HOLD DOWN POINTS. - [SDR 2016FA0000312](https://openairdocs.org/sdr/2016FA0000312.md): Governor · failed · Jun 28, 2016 · N96CB · Mooney M20J · Propeller Governor > GOVERNOR WAS BENCH CHECKED AND FOUND NOT TO BE ACHIEVING RPM ABOVE 1600. PRESSURE RELIEF WAS LOW. CUSTOMER REQUEST O/H OF THE GOVERNOR; AT THIS POINT, THE GOVERNOR WAS DISASSEMBLED AND FOUND TO HAVE INTERNAL DAMAGE OF THE PUMP CAVITY. DAMAGE FROM AN UNKNOWN - [SDR 2015FA0000320](https://openairdocs.org/sdr/2015FA0000320.md): Bolt · bent · Jul 14, 2015 · N121A · Mooney M20J · Engine (Reciprocating) > AIRCRAFT MADE AN UNSCHEDULED LANDING ON A ROAD DUE TO LOSS OF OIL PRESSURE AND ENGINE BEGAN TO SHAKE VIOLENTLY AND LOST POWER. A LARGE HOLE WAS DISCOVERED IN THE CRANKCASE ABOVE THE NR 4 CYLINDER. INSPECTION OF ENGINE COMPONENTS ON THE LIMITED TEARDOWN BY TH - [SDR CA141016001](https://openairdocs.org/sdr/CA141016001.md): Valve Spring · broken · Oct 10, 2014 · Mooney M20J · Reciprocating Engine Cylinder Section > (CAN) AIRCRAFT WAS FLYING AT 3500AGL. AT APPROXIMATELY 18 MINUTES ENGINE BEGAN RUNNING ROUGH. PILOT CHECKED ALL INSTRUMENT, ALL WAS NORMAL EXCEPT NR 1 CYLINDER CHT WAS LOW, INDICATING FAILURE. AIRCRAFT BEGIN LOSING ALTITUDE AND FORTUNATELY LANDED SAFELY. DURI - [SDR CA140328006](https://openairdocs.org/sdr/CA140328006.md): Lifter · failed · Mar 6, 2014 · Mooney M20J · Reciprocating Engine Power Section > (CAN) NEW LW18840 CAMSHAFT AND NEW 15B26064 LIFTER BODIES FAILED. ENGINE FAILED AFTER OVERHAULED AT 248 HOURS. - [SDR CA140328007](https://openairdocs.org/sdr/CA140328007.md): Plunger · failed · Mar 6, 2014 · Mooney M20J · Reciprocating Engine Power Section > (CAN) LW10286 IDLER GEAR WITH FUEL PUMP LOBE AND SL61544 FUEL PUMP PLUNGER CONTACT FACES FAILED BOTH ITEMS INSTALLED NEW AT OVERHAUL. ENGINE TIME 248 TSOH. - [SDR 2013FA0000478](https://openairdocs.org/sdr/2013FA0000478.md): Cylinder · damaged · Jul 26, 2013 · N201NU · Mooney M20J · Reciprocating Engine Cylinder Section > ACFT MADE UNSCHEDULED STOP DUE TO A ROUGH ENGINE. FOUND NR 1 CYLINDER HAD BOTH REAR THRU STUDS BROKEN OFF, AND ALL FOUR SMALL STUDS BROKEN OFF. FOUND ALL BROKEN PARTS IN BAFFLING. INTAKE TUBE FOR NR 1 CYLINDER WAS FOUND WITH ONE BOLT MISSING AND THE OTHER - [SDR 2013FA0000298](https://openairdocs.org/sdr/2013FA0000298.md): Bearing · worn · Feb 28, 2013 · N1075C · Mooney M20J · Magneto/Distributor > DISTRIBUTOR BLOCK BEARING HAS EXCESSIVE PLAY/ WEAR. - [SDR 2012FA0000661](https://openairdocs.org/sdr/2012FA0000661.md): Gasket · unknown · Sep 27, 2012 · N4305H · Mooney M20J · Magneto/Distributor > ENGINE STARTED TO LEAK OIL. FOUND MAGNETO LOOSE TO ENGINE BUT HOLD DOWN BLOCKS WERE TIGHT TO THE ENGINE. THIS CAUSED DAMAGE TO THE MAGETO CASE. MEASURED A NEW GASKET AND ITS THICKNESS IS.034. THE NEW GASKETS, ARE THINNER THAN USED, WAS THE PROBLEM DUE TO - [SDR 2012FA0000534](https://openairdocs.org/sdr/2012FA0000534.md): Bungee · jammed · Jun 6, 2012 · N9113J · Mooney M20J · Elevator Control System > UPON PERFORMING A PREFLIGHT INSPECTION OF THE ELEVATOR FOR FREE AND CORRECT MOVEMENT THE ELEVATOR REMAINED STUCK IN THE FULL UP POSITION. PUSHING THE YOKE IN TOWARDS THE INSTRUMENT PANEL WAS NOT POSSIBLE, MINIMUM FORCE WAS USED TO TRY TO FREE THE CONTROL IN OR - [SDR FK8R201104210003](https://openairdocs.org/sdr/FK8R201104210003.md): Panel · cracked · Apr 21, 2011 · N5695K · Mooney M20J · Flight Compartment Equipment > PILOT SEAT BACK REAR PANEL WAS FOUND CRACKED ON BOTH SIDES. - [SDR CA100916005](https://openairdocs.org/sdr/CA100916005.md): Alt Air Door · broken · Sep 15, 2010 · Mooney M20J · Reciprocating Engine Front Section > THE ACFT WAS TAKINGOFF FROM AIRFIELD WHEN THE ENGINE SUDDENLY LOST POWER. AN EMERGENCY WAS DECLARED. THE ENG MIXTURE WAS "LEANED OUT" AND SOME OF THE POWER WAS RESTORED. THE ACFT LANDED SAFELY BACK AT AIRFIELD. PART OF THE ENGINE ALTERNATE AIR DOOR WAS FOU - [SDR 2010FA0000169](https://openairdocs.org/sdr/2010FA0000169.md): Throttle Cable · frayed · Jan 8, 2010 · N57651 · Mooney M20J · Power Lever > THROTTLE CABLE LOCKED IN FLIGHT, EXAMINATION FOUND PARTIAL FAILURE OF INTERNAL CABLE APPROX I5 CM FROM SWAG AT CONTROL KNOB END OF ASSY. BELIEVE FAILURE TO BE CAUSED BY TURNING KNOB WHILE TIGHTENING THROTTLE LOCK OR BY ATTEPTING TO USE A VENIER CONTROL. - [SDR 2008FA0000918](https://openairdocs.org/sdr/2008FA0000918.md): Magneto · malfunctioned · Dec 15, 2008 · N201TC · Mooney M20J · Magneto/Distributor > STARTED THE ACFT NORMALLY, TAXIED FROM HANGAR TO THE SELF-SERVE FUEL PUMP AND SHUTDOWN. FUELED ACFT. ATTEMPTED TO START THE ACFT AFTER FUELING. THE ENG TURNED OVER NORMALLY, BUT DID NOT FIRE. TROUBLESHOOTING REVEALED NO SPARK OUTPUT FROM THE MAGNETO. SENT ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql 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 = 'IO360A3B6D' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/engine/lycoming-io-360-a3b6d/reports --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.