# Service difficulty reports: Mooney M20J

A list on [Mooney M20J](https://openairdocs.org/model/mooney-m20j.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 4 · 185 reports

- [SDR 2026FA0000799](https://openairdocs.org/sdr/2026FA0000799.md): Door · broken · Aug 24, 2026 · N1067G · Mooney M20J · Engine Anti-Icing System
  > AIRCRAFT WAS IN CRUISE AT 6000' WHEN ALL 4 CYLINDERS EXPERIENCED ABNORMAL EGT RISE, SLIGHT REDUCTION IN CHT, AND ENGINE SURGING. DIVERTED TO NEAREST AIRPORT. REMOVED MAIN ENGINE AIR FILTER AND DISCOVERED 600118-015 ALTERNATE AIR DOOR WITH CRACKS EMANATING FR
- [SDR 2026FA0000279](https://openairdocs.org/sdr/2026FA0000279.md): Intake Valve · broken · Apr 20, 2026 · N452X · Mooney M20J · Reciprocating Engine Cylinder Section
  > PILOT REPORTED DURING CRUISE OPERATION A SUDDEN ENGINE ROUGHNESS WITH A LOSS OF POWER. EMERGENCY LANDING REQUESTED AND COMPLETED AT KOXR. INSPECTION OF ENGINE FOUND CYLINDER NUMBER 3 WITH HOLE THROUGH INTAKE PORT AND REAR BAFFLE. BORESCOPE INSPECTION REVEALED
- [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 2026FA0000302](https://openairdocs.org/sdr/2026FA0000302.md): Coil · arced · Mar 10, 2026 · N9140X · Mooney M20J · Low Tension Coil
  > ENGINE CYLINDER NR 4 WAS EXPERIENCING INTERMITTENT MISFIRING. FOUND L/H COIL WAS GROUNDING TO ITS MOUNT THROUGH A SMALL PINHOLE IN BOTTOM OF THE COIL CASE.THE COIL WAS RETURNED TO ELECTROAIR FOR EVALUATION. ELECTROAIR STATED THAT IT WAS TESTED AND "THERE WAS N
- [SDR 2025FA0000636](https://openairdocs.org/sdr/2025FA0000636.md): Impulse Coupling · failed · Aug 26, 2025 · N374SM · Mooney M20J · Magneto/Distributor
  > I HAVE NOW HAD 2 QUALITY AICRAFT ACCESSORIES (QAA/HARTZELL)-OVERHAULED SLICK 4372 MAGNETOS W/ IMPULSE COUPLINGS VIOLENTLY SELF-DESTRUCT IN THE SPAN OF 200 HOURS. HARTZELL, THE PARENT COMPANY OF QAA, HAS INFORMED ME THAT BOTH MAGNETOS HAD BRAND NEW OEM CHAMPIO
- [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 2022FA0000039](https://openairdocs.org/sdr/2022FA0000039.md): Actuator · used · Jan 21, 2022 · N4815H · Mooney M20J · Landing Gear Actuator
  > PRIOR TO LANDING THE PILOT RECEIVED AN AUDIBLE GEAR WARNING HORN, BUT THE GEAR INDICATOR SHOWED A GREEN LIGHT. THE LANDING GEAR EXTENDED BUT FAILED TO LOCK DUE TO THE ELECTROMECHANICAL ACTUATOR CAUSING THE CIRCUIT BREAKER TO POP. THE PILOT COULD NOT GET THE
- [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 F3OR202006160001](https://openairdocs.org/sdr/F3OR202006160001.md): Gyro · false indication · May 26, 2020 · N201AT · Mooney M20J · Attitude Gyro and Indicating System
  > INTERMITTENT ATTITUDE FAILURE OF THE KI300 HORIZON INDICATOR. PRIMARY ATTITUDE INDICATOR INTERMITTENTLY AND WITHOUT WARNING INDICATES ERRONEOUS PITCH AND ROLL ATTITUDES AND ALSO, WHEN INTERFACED TO THE AUTOPILOT CAUSES THE AUTOPILOT TO DEVIATE FROM ITS INTENDE
- [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 2016FA0000188](https://openairdocs.org/sdr/2016FA0000188.md): Alternator · failed · Mar 1, 2016 · N1079S · Mooney M20J · AC Inverter
  > PLANE ARRIVED AT SHOP WITH 5 AMP ALT FIELD CIRCUIT BREAKER POPPED. INVESTIGATION REVEALED STATOR BURNED BLACK, FRIED, HOWEVER THE SLIP RINGS WERE PRODUCING A STRONG MAGNETIC FIELD THAT AT FIRST BLUSH MADE ALTERNATOR APPEAR OK. FURTHER CHECK DISCOVERED VOLTAG
- [SDR 2015FA0000378](https://openairdocs.org/sdr/2015FA0000378.md): Actuator · broken · Aug 12, 2015 · N9142H · Mooney M20J · Landing Gear Actuator
  > PILOT TRIED TO LAND, BUT WAS UNABLE TO LOWER LANDING GEAR. PILOT FLEW BACK TO DEPARTURE AIRPORT AND TRIED MULTIPLE ATTEMPTS TO LOWER GEAR BUT WAS UNSUCCESSFUL. PILOT NOTED THE LANDING GEAR ACTUATOR CIRCUIT BREAKER WAS POPPING AND HAD TO TRY THE EMERGENCY LAN
- [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 BQVD201506090001](https://openairdocs.org/sdr/BQVD201506090001.md): Ring · seized · Jun 5, 2015 · N60RP · Mooney M20J · Reciprocating Engine Power Section
  > NR 4 CYLINDER WAS REMOVED AND DISCOVERED THE FOLLOWING: OIL CONTROL RING WAS SEIZED IN PISTON. PISTON, PISTON BORES WORN IN AREA WHERE PIN RESIDES ON BOTH SIDES OF PISTON. NO WRIST PIN CAP WEAR FOUND. CONTACT BEING MADE BETWEEN PISTON SKIRT END SURFACE & C
- [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 9PRR2014FA0000444](https://openairdocs.org/sdr/9PRR2014FA0000444.md): Bellcrank · worn · Jun 26, 2014 · N444JJ · Mooney M20J · Elevator Control System
  > DURING THE ANNUAL INSPECTION, ELEVATOR AFT BELLCRANK WAS NOTICED TO HAVE EXCESSIVE PLAY AT THE PIVOTING POINT AND BETWEEN THE TWO BRACKETS THAT MAKE UP THE ASSY. CONDITION IS FOUND BY MOVING THE ELEVATOR SURFACE BY HAND, FROM ITS DOWN POSITION TO 1 INCH IN T
- [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 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 4MAR2014022800125](https://openairdocs.org/sdr/4MAR2014022800125.md): Hose · leaking · Feb 21, 2014 · N201QT · Mooney M20J · Aircraft Fuel Distribution System
  > PILOT REPORTED FUEL LEAK UNDER INSTRUMENT PANEL. DURING INVESTIGATION, FOUND THAT THE LINE FOR THE FUEL PRESSURE INDICATOR WAS LEAKING SIGNIFICANTLY INTO THE VOLTAGE REGULATOR. FLEXIBLE LINE WAS MANUFACTURED IN THE THIRD QUARTER OF 1991 AND WAS LEAKING DUE T
- [SDR 2013FA0000745](https://openairdocs.org/sdr/2013FA0000745.md): Terminal · corroded · Oct 20, 2013 · N213CS · Mooney M20J · Engine Fuel System Wiring
  > ERRATIC FUEL PRESSURE INDICATIONS WITH INTERMITTENT DROP TO ZERO PSI INDICATION. FOUND SMALL AMOUNT OF CORROSION UNDER TERMINAL STUD NUT AFFECTING RESISTANCE AND INDICATION.
- [SDR 2013FA0000612](https://openairdocs.org/sdr/2013FA0000612.md): Control Rod · corroded · Oct 3, 2013 · N43JA · Mooney M20J · Ailerons
  > DURING VISUAL INSPECTION OF AILERON PUSH RODS AT ANNUAL INSPECTION, NOTED A BUBBLING IN PAINT AT THE BOTTOM OF THE LOW SPOT IN THE RT AILERON CONTROL ROD. REMOVED OXIDIZED RUSTY MATERIAL UNTIL THERE WAS A.250 X.125 OVAL HOLE IN THE BOTTOM OF THE STEEL ROD
- [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 2013FA0000374](https://openairdocs.org/sdr/2013FA0000374.md): Distributor Gear · loose · Jun 24, 2013 · N1067G · Mooney M20J · Magneto/Distributor
  > MAGNETO CAUSED INTERMITTENT PROBLEMS FOR PILOT OVER THE 12 FLIGHT HOURS PRECEDING THE PARTS REMOVAL. PILOT REPORTED AN IN FLIGHT MAGENTO FAILURE. LANDED AND MAGNETO BEGAN WORKING AGAIN. REPAIR STATION FOUND CONTACTOR TANG ON DISTRIBUTOR GEAR LOOSE AND SPIN
- [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 2012FA0000189](https://openairdocs.org/sdr/2012FA0000189.md): Fuel Tank · leaking · Feb 15, 2012 · N201SN · Mooney M20J · Fuel Storage
  > THIS ACFT HAS BEEN REPEATEDLY REPAIRED TO CORRECT FUEL LEAKS. EVERY DRAIN HOLE HAS BEEN COVERED UP ALLOWING WATER AND FUEL TO BE TRAPPED IN THE OTBD BAYS. ALSO THE DRAIN VALVE RECEPTACLE DRAIN HOLES WERE COVERED WITH SEALANT CAUSING WATER TO COLLECT UP TO.5
- [SDR 2011FA0000532](https://openairdocs.org/sdr/2011FA0000532.md): Tube · failed · Aug 3, 2011 · N60RP · Mooney M20J · Tire Tube
  > RT MAIN TIRE FLAT AT RUN UP AREA. REMOVED WHEEL. DISASSEMBLED AND FOUND BUTYL TYPE G15-G00-6 TUBE WITH HALF INCH LONG SLIT IN SIDEWALL. INSPECTED TIRE AND FOUND NO HOLES OR SLITS IN SIDEWALL AND NO ABNORMALITY ON INSIDE OF TIRE. THIS IS THE THIRD BUTYL TYP
- [SDR 2011FA0000531](https://openairdocs.org/sdr/2011FA0000531.md): Battery · leaking · Aug 3, 2011 · N201SG · Mooney M20J · Emergency Locator Beacon
  > ELT REMOVED FOR FAR 91.207D INSP WHITE POWDER NOTED AT PARTING SURFACE BETWEEN TRANSMITTER AND BATTERY COMPARTMENT. DISASSEMBLED ELT AND FOUND 6 OF 8 D-CELL BATTERIES LEAKING AND RUPTURED. ANY ELT USING INDIVIDUAL UNSEALED BATTERIES SHOULD HAVE ALL BATTERIES
- [SDR 2011FA0000451](https://openairdocs.org/sdr/2011FA0000451.md): Magneto · intermittent · May 12, 2011 · N2140L · Mooney M20J · Magneto/Distributor
  > OWNER REPORTED ENGINE WOULD START RUNNING ROUGH AFTER 15 TO 20 MINUTES OF FLIGHT, WITH CHECK OF RT MAGNETO GIVING LARGE RPM DROP. REPLACED MAGNETO AND ENGINE OPERATION NOW NORMAL. DISASSEMBLED MAGNETO AND FOUND THAT DISTRIBUTOR GEAR ELECTRODE FINGER WAS LOOS
- [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 2011FA0000252](https://openairdocs.org/sdr/2011FA0000252.md): Blade · cracked · Apr 19, 2011 · N5702B · Mooney M20J · Propeller Blade Section
  > PROPELLER WAS REMOVED FROM ACFT TO INVESTIGATE VIBRATION THAT HAD STARTED IN THE LAST 10 HOURS OF FLIGHT. BLADE, SN CK010, HAS SEVERE CRACK IN BLADE SHANK THAT GOES THROUGH TO INSIDE BORE.
- [SDR 2011FA0000207](https://openairdocs.org/sdr/2011FA0000207.md): Tube · bent · Mar 28, 2011 · N888DF · Mooney M20J · Landing Gear Retraction/Extension System
  > UPON LANDING, THE LT LANDING GEAR COLLAPSED WITH NO GEAR UNSAFE INDICATION.
- [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
- [SDR HN8R200800001](https://openairdocs.org/sdr/HN8R200800001.md): Control Cable · broken · Jan 22, 2008 · N58102 · Mooney M20J · Propeller Governor
  > PROPELLER GOVERNOR CONTROL CABLE BROKE WHILE AIRCRAFT WAS ON GROUND.
- [SDR 2007FA0000287](https://openairdocs.org/sdr/2007FA0000287.md): Rivet · corroded · Mar 22, 2007 · N9156X · Mooney M20J · Engine Cowling System
  > OWNER BROUGHT COWLINGS IN FOR REPAIR BECAUSE THE THROUGH SKIN RIVETS WERE CORRODING AND SHEARING OFF AT THE MFG HEAD AS EXHIBITED BY BLISTERING PAINT AT THE RIVET LOCATIONS. INSPECTION REVEALED MOST OF THE AD TYPE RIVETS WERE SEVERELY CORRODED BECAUSE THE COW
- [SDR 2006FA0001007](https://openairdocs.org/sdr/2006FA0001007.md): Tee Fitting · loose · Sep 8, 2006 · N5760Y · Mooney M20J · Fuselage Main, Attach Fittings
  > DURING ANNUAL INSPECTION, FOUND PRECISE FLIGHT SVS V, SN 17245 (T-FITTING) LOOSE IN HOUSING. IF FITTING PULLED OUR YOU WOULD HAVE COMPLETE VACUUM SYS FAILURE. (K)
- [SDR 2006FA0000675](https://openairdocs.org/sdr/2006FA0000675.md): Bushing · spun · Jul 3, 2006 · N3860H · Mooney M20J · Reciprocating Engine Rear Section
  > FOUND DURING ANNUAL INSP, AN ALUMINUM BUSHING THAT IS LOCATED IN ACCESSORY CASE, WHERE MAGNETO DRIVE GEAR IS LOCATED HAD BECOME LOOSE IN CASE AND SPUN. FOUND THIS PROBLEM, WERE NOT ABLE TO INSTALL MAGNETO CORRECTLY, WHEN MAGNETO WAS INSTALLED, IMPULSE COUPL
- [SDR 2050506](https://openairdocs.org/sdr/2050506.md): Bushing · lack of lube · Jun 21, 2006 · N386OH · Mooney M20J · Magneto/Distributor
  > CRANKCASE WAS FIELD REPAIRED BY INSTALLING A BUSHING IN THE MAGNETO DRIVE GEAR BOSS. IT APPEARS THE OIL SUPPLY HOLE WAS NOT DRILLED IN THE BUSHING. THE BUSHING WAS STARVED FOR OIL AND METAL WAS FOUND IN THE OIL AND FILTER, THE BUSHING WAS LOOSE AND DAMAGED FRO
- [SDR 2006FA0000285](https://openairdocs.org/sdr/2006FA0000285.md): Torque Tube · worn · Mar 2, 2006 · N913JN · Mooney M20J · Elevator Control System
  > EMPENNAGE TRIM CONTROL TORQUE FOUND TO HAVE A DEEP GROOVE FROM WEARING ON CAT TRACK/GROMMET WHERE IT PASSES THROUGH STIFFENERS. THIS TUBE WAS ALSO WELD REPAIRED AT SOME TIME PREVIOUS THEN SWAPPED END FOR END SO TUBE WOULD WEAR ON A NEW SURFACE. IT APPEARS TH
- [SDR 2006FA0000176](https://openairdocs.org/sdr/2006FA0000176.md): Exhaust Port · broken · Feb 15, 2006 · N799EC · Mooney M20J · Engine Collector/Tailpipe/Nozzle
  > INSTALLED POWER FLOW SYSTEMS EXHAUST STC NR SA02871AT AT TACH TIME 4646.93, AT TACH TIME 4768.70 THE NR 4 EXHAUST PORT HAD BROKE FREE OF MUFFLER. (K)
- [SDR 2006FA0000094](https://openairdocs.org/sdr/2006FA0000094.md): Transmitter · deteriorated · Jan 29, 2006 · N201CD · Mooney M20J · Emergency Locator Beacon
  > ELT TRANSMITTER WAS REMOVED DURING ANNUAL FOR BATTERY REPLACEMENT AND TESTING. UNIT HAD BATTERIES REPLACED. DURING TESTING THE UNIT MADE A WEAK SIGNAL OUTPUT AND HAS NO RANGE. USED DIFFERENT SET OF BATTERIES FOR RETESTING, SAME RESULTS. HOOKED BACK IN AIRCR
- [SDR 2006FA0000095](https://openairdocs.org/sdr/2006FA0000095.md): Transmitter · inoperative · Oct 29, 2005 · N201VE · Mooney M20J · Emergency Locator Beacon
  > ELT TRANSMITTER WAS REMOVED DURING ANNUAL FOR BATTERY REPLACEMENT AND TESTING. UPON REMOVAL THE ELT WENT OFF WHEN TURNED UPSIDE DOWN. PIECES CAN BE HEARD RATTLING AROUNG INSIDE UNIT. SUSPECT G-SWITCH CAME LOOSE. THIS IS OUT 2ND EXPERIENCE OF SAME CONDITION
- [SDR 2005FA0001408](https://openairdocs.org/sdr/2005FA0001408.md): Connector · disconnected · Oct 2, 2005 · N4171H · Mooney M20J · Air Conditioning System Wiring
  > CONNECTOR CAME LOOSE FROM SLAVE CONTROLLER WHILE ON THE GROUND. HSI WAS NOW IN FREE GYRO (UNSLAVED) MODEL BUT THERE WAS NO (HDG) FLAG, HENCE GYRO SLOWLY DRIFTED WITHOUT WARNING TO PILOT. (K)
- [SDR 2005FA0000866](https://openairdocs.org/sdr/2005FA0000866.md): Seat · cracked · Jun 10, 2005 · N5262F · Mooney M20J · Flight Compartment Equipment
  > OPTIONAL VERTICALLY ADJUSTING PILOTS SEAT MOVED AFT DURING TAKEOFF, FOUND LT REAR BELLCRANK ASSY CRACKED WHICH DISTORTED SEAT ALLOWING SEAT PINS NOT TO FULLY ENGAGE SEAT TRACKS. INSTALLED A NEW BELLCRANK AND TUBE. NEW BELLCRANK HAD REINFORCEMENT STRAPS WELDE
- [SDR 2005FA0000123](https://openairdocs.org/sdr/2005FA0000123.md): Cylinder · failed · Nov 16, 2004 · N3925H · Mooney M20J · Reciprocating Engine Cylinder Section
  > PILOT REPORTED THAT ENGINE BEGAN RUNNING ROUGH. READINGS FORM THE ENGINE MONITOR SHOWED THAT NR 2 CYLINDER FAILED. PILOT ELECTED TO LAND. INVESTIGATION SHOWED THAT BOTH UPPER THROUGH BOLTS AND BOTH UPPER CYLINDER ATTACH STUDS FOR NR 2 CYLINDER HAD FAILED AT

Next page: https://openairdocs.org/model/mooney-m20j/reports.md?page=2

## 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 aircraft_model_key = 'M20J'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/mooney-m20j/reports

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