# Service difficulty reports: Mooney M20F

A list on [Mooney M20F](https://openairdocs.org/model/mooney-m20f.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 2 · 60 reports

- [SDR 2026FA0000634](https://openairdocs.org/sdr/2026FA0000634.md): Servo · failed · Dec 20, 2025 · N3486N · Mooney M20F · Autopilot System
  > DURING DESCENT FROM BIG BEAR, THE GARMIN AUTOPILOT ABRUPTLY DISCONNECTED FOLLOWING FAILURE OF THE GSA 28 PITCH SERVO. IMMEDIATELY PRIOR TO THE FAILURE, I OBSERVED A MOMENTARY PITCH-TRIM-DOWN INDICATION. THE AIRCRAFT USES MANUAL PITCH TRIM. UPON SERVO/AUTOPILOT
- [SDR 2025FA0000507](https://openairdocs.org/sdr/2025FA0000507.md): Mount · cracked · Jul 17, 2025 · N6345Q · Mooney M20F · Engine Mount Section
  > DURING ENGINE OVERHAUL AND ANNUAL INSPECTION, THE R/H LOWER ENGINE MOUNT WAS FOUND CRACKED. THIS WAS HIDDEN UNTIL THE ENGINE MOUNT WAS REMOVED. RECOMMEND THAT MECHANICS VISUALLY INSPECT THE LOWER ENGINE MOUNT AREA WHERE IT AFFIXES TO THE FIREWAL, WITH A BORESC
- [SDR 2025FA0000278](https://openairdocs.org/sdr/2025FA0000278.md): Leg Assy · sheared · Mar 12, 2025 · N1967 · Mooney M20F · Nose/Tail Landing Gear
  > NOSE/FRONT LANDING GEAR SHEARED AFTER ENCOUNTERING 2-DEGREE DRAINAGE INDENTURE/DIP WHEN TAXING FROM PARKING. EXAMINATION OF NOSE GEAR ASSEMBLY REVEALED THAT FRONT GEAR FORK/GEAR LEG OF THE NOSE GEAR ASSEMBLY (PN: 54004-505) AT WELDING POINT, JUST ABOVE THE SH
- [SDR 2024FA0000629](https://openairdocs.org/sdr/2024FA0000629.md): Fuel Line · broken · Aug 1, 2024 · N6309Q · Mooney M20F · Fuel Storage
  > #1 FUEL INJECTION LINE CAME APART AT SOLDER JOINT BY INJECTOR B-NUT. CYLINDER SHUT DOWN IN FLIGHT AND CAUSED A FUEL LEAK. AIRCRAFT MADE EMERGENCY LANDING AT MILITARY INSTALLATION. PART IS 1029.9 HOURS SINCE NEW FROM FACTORY. REPETITIVE INSPECTION UNDER AD I1
- [SDR 2025FA0000471](https://openairdocs.org/sdr/2025FA0000471.md): Support · cracked · May 27, 2024 · N9068V · Mooney M20F · Main Landing Gear
  > LUG SUPPORT CRACKED AT LANDING GEAR ACTUATOR AFT ATTACH TO FUSELAGE ALLOWING FORE AND AFT MOVEMENT OF ACTUATOR. LUG MOUNTING HOLES ELONGATED IN BRACKET ASSEMBLY.
- [SDR 2023FA0000797](https://openairdocs.org/sdr/2023FA0000797.md): Landing Gear · failed insp · Nov 29, 2023 · N2921L · Mooney M20F · Main Landing Gear Strut/Axle/Truck
  > EXCESSIVE CORROSION FOUND IN THE MLG SPINDLE, UPPER TORQUE TUBE. CORROSION WAS HIDDEN BY PAINT AND DIRT. PAINT WAS REMOVED FROM THE GEAR SPINDLES IN PREPARATION FOR REPAIR AND REPAINT. IT WAS ONLY THEN THE DAMAGE WAS LOCATED. TWO OTHER SERVICEABLE SPINDLES WER
- [SDR 2023FA0000039](https://openairdocs.org/sdr/2023FA0000039.md): Shaft · sheared · Jan 19, 2023 · N204TA · Mooney M20F · Control Column Section
  > DURING LANDING FLARE, PILOT'S CONTROL YOKE SEPARATED FROM THE CONTROL SHAFT. INSPECTION REVEALED THE SHAFT HAD SHEARED OFF AT THE HOLES FOR THE TAPER PIN HOLDING THE YOKE TO THE SHAFT. CONDITION IS THE SUBJECT OF AD 77-17-04. AIRCRAFT WAS IN COMPLIANCE WITH
- [SDR 2019FA0000179](https://openairdocs.org/sdr/2019FA0000179.md): Rod End · separated · May 16, 2019 · N3555N · Mooney M20F · Mixture Control
  > DURING CRUISE FLIGHT, THE MIXTURE CONTROL ROD END SEPARATED FROM THE PRESSURE CARBURETOR CONTROL ARM, WHICH RESULTED IN POWER LOSS.
- [SDR 2015FA0000506](https://openairdocs.org/sdr/2015FA0000506.md): Truss · separated · Oct 27, 2015 · N6496Q · Mooney M20F · Nose/Tail Landing Gear Strut/Axle
  > DURING TAXI NLG TRUSS SEPARATED FROM ACFT. DISCOVERED DURING RECORDS INSPECTION, IN 1999 THE TRUSS WAS R & R WITH A TRUSS WITH STOPS INSTALLED. THE ENTRY READS, REPLACED TRUSS WITH PN L540041-501. THE TAG READS REPLACED BENT TUBES, ADD STOPS, HEAT TREAT. T
- [SDR 2015FA0000443](https://openairdocs.org/sdr/2015FA0000443.md): Lever · separated · Sep 10, 2015 · N6496Q · Mooney M20F · Landing Gear Selector
  > WHILE TAXING FOR T/O, THE NLG COLLAPSED, FOLLOWED BY BOTH MAIN GEARS. INSPECTION REVEALED THE LANDING GEAR RETRACTION LEVER ASSEMBLY SEPARATED AT THE WELD. THE WELD SHOWED SIGNS OF AN OLDER CRACK BEING PRESENT AT WELD, PRIOR TO COMPLETE FAILURE.
- [SDR 2014FA0000522](https://openairdocs.org/sdr/2014FA0000522.md): Filler · cracked · Aug 19, 2012 · N6437Q · Mooney M20F · Propeller System
  > REPLACED SPINNER AND ADAPTER PLATE WITH PN 103585F2 WHEN PROPELLER HAD 29.96 TSMOH AND SINCE NEW THAT WAS INSTALLED IAW THE MM. DURING A RECENT ANNUAL INSPECTION, REMOVED THE SPINNER FOR INSPECTION AND LUBRICATION OF THE PROPELLER. FOUND CRACK EMANATING FROM
- [SDR CA120103022](https://openairdocs.org/sdr/CA120103022.md): Spinner · cracked · Dec 28, 2011 · Mooney M20F · Propeller Spinner Section
  > (CAN) PROPELLER SPINNER CRACKED FROM A ATTACHEMENT SCREW TO THE BLADE CUTOUT AND A 3 INCH PIECE SEPERATED IN FLIGHT. AIRCRAFT WAS GROUNDED AND A NEW SPINNER INSTALLED PER HARTZELL ALERT SERVICE BULLETIN HC-ASB-61-332.
- [SDR 2012FA0000004](https://openairdocs.org/sdr/2012FA0000004.md): Adapter · cracked · Dec 14, 2011 · N6437Q · Mooney M20F · Propeller Spinner Section
  > INSTALLED A NEW STC PROPELLER WITH A NEW SPINNER AND ADAPTER PLATE SUPPLIED IAW STC SA02414CH-D. AFTER 30 HOURS OF OPERATION, WHILE DOING A WALK AROUND INSP, NOTICED THE SPINNER WAS CRACKED AT A SCREW HOLE. REMOVED SPINNER AND FOUND ADAPTER PLATE CRACKED. T
- [SDR 2012FA0000003](https://openairdocs.org/sdr/2012FA0000003.md): Spinner · cracked · Dec 14, 2011 · N6437Q · Mooney M20F · Propeller Spinner Section
  > INSTALLED A NEW STC PROPELLER WITH A NEW SPINNER AND ADAPTER PLATE SUPPLIED IAW STC SA02414CH-D. AFTER 30 HOURS OF OPERATION, WHILE DOING A WALK AROUND INSPECTION, NOTICED THE SPINNER WAS CRACKED AT A SCREW HOLE. REMOVED SPINNER AND FOUND ADAPTER PLATE CRACK
- [SDR 2011FA0000627](https://openairdocs.org/sdr/2011FA0000627.md): Cylinder Bore · peeling · Sep 21, 2011 · N7432V · Mooney M20F · Reciprocating Engine Cylinder Section
  > CLIMBING THROUGH 7000 FELT A SLIGHT SHUDDER. WHILE LEVELING AT 9500, NOTICED OIL PRESSURE GOING DOWN. PROP WENT TO FLAT PITCH. OIL PRESSURE NOW IN YELLOW ARC. DECLARED AN EMERGENCY. PULLED ENGINE TO IDLE AND BEGAN A DESCENT TO AIRPORT. LANDED LONG AND BL
- [SDR CA110829008](https://openairdocs.org/sdr/CA110829008.md): Selector Switch · broken · Aug 28, 2011 · Mooney M20F · Trailing Edge Flap Control System
  > (CAN) FLAPS T/O, FULL FLAP AND FLAPS UP SELECTED ON RUN UP. FLAPS STOPPED AT T/O POSITION AND WOULD NOT MOVE WHEN SELECTED UP OR DOWN. FOUND THE FLAP SELECTOR SWITCH BROKEN AT THE PIVOT POINT OF THE SWITCH. NO REPORTED PROBLEMS WITH THIS SWITCH SINCE ACFT WA
- [SDR 2011FA0000464](https://openairdocs.org/sdr/2011FA0000464.md): Torque Tube · broken · Jun 29, 2011 · N9212V · Mooney M20F · Rudder Control System
  > RUDDER TORQUE TUBE ASSY BROKE AT POINT WHERE BELCRANK IS ATTACHED TO TORQUE TUBE CAUSING LOSS OF STEERING CONTROL.
- [SDR CA110517002](https://openairdocs.org/sdr/CA110517002.md): Camshaft · making metal · Apr 25, 2011 · Mooney M20F · Reciprocating Engine Power Section
  > INSPECTION OF OIL FILTER DURING ROUTINE MX REVEALED SMALL FERROUS METAL PARTICLES THAT WARRANTED FURTHER INVESTIGATION RESULTING IN THE REMOVAL OF NR 1 CYLINDER. IT WAS DISCOVERED THAT THE NR1 INTAKE TAPPET WAS SEVERELY GALLED. THE ENGINE WAS REMOVED FOR REPA
- [SDR 2010FA0000228](https://openairdocs.org/sdr/2010FA0000228.md): Mount · broken · Mar 12, 2010 · N35LA · Mooney M20F · DC Generator-Alternator
  > HAVE HAD MULTIPLE PROBLEMS WITH THE MOUNTING KIT FOR THE ALTERNATOR THROUGH STC SA334SW. A NEW ALTERNATOR WAS INSTALLED ON 9/8/2006. AFTER 64 FLIGHT HOURS, THE ALUMINUM MOUNTING BLOCK BROKE DURING FLIGHT ON 6/5/07, AND WAS REPLACED ON 6/13/07. AFTER 127 FLI
- [SDR 2008FA0000879](https://openairdocs.org/sdr/2008FA0000879.md): Leg Assy · broken · Nov 27, 2008 · Mooney M20F · Nose/Tail Landing Gear
  > PILOT STATED THAT HE HEARD A LOUD NOISE DURING TAKE-OFF AND THAT THE AIRCRAFT BEGAN TO "HANDLE DIFFERENTLY." HE CONTINUED TO ACCELERATE BRIEFLY, LIFTED OFF AND THEN DECIDED TO ABORT THE TAKEOFF. THE ACFT CAME TO REST ON ITS NOSE WITH THE NOSE L/G FOLDED BACK
- [SDR 2008FA0000878](https://openairdocs.org/sdr/2008FA0000878.md): Tube · broken · Nov 27, 2008 · N6829V · Mooney M20F · Nose/Tail Landing Gear
  > PILOT STATED THAT HE HEARD A LOUD SOUND DURING THE TAKE OFF ROLL OFF OF A GRASS STRIP AND THE ACFT BEGAN TO "HANDLE DIFFERENTLY". HE CONTINUED TO ACCELERATE BRIEFLY AND THEN DECIDED TO ABORT THE TAKE-OFF. INCIDENT INVESTIGATION FOUND ACFT ON ITS NOSE WITH T
- [SDR CA081003007](https://openairdocs.org/sdr/CA081003007.md): Actuator · failed · Sep 25, 2008 · Mooney M20F · Landing Gear Actuator
  > (CAN) LANDING GEAR FAILED TO EXTEND ELECTRICALLY. ACTUATOR TEAR DOWN REVEALED THE MOTOR HAD FAILED.
- [SDR 2008FA0000203](https://openairdocs.org/sdr/2008FA0000203.md): Starter · failed · Mar 20, 2008 · N9615M · Mooney M20F · Engine Starter
  > THIS STARTER WAS PURCHASED NEW FROM A LOCAL VENDOR. THE STARTER FAILED TO OPERATE AFTER LESS THAN A YEAR AND LESS THAN 100 HOURS OF SERVICE. THE OWNER\OPERATOR WANTED TO HAVE THE OLDER, HEAVIER STARTER INSTALLED HOWEVER NONE WERE AVAILABLE, AFTER CONTACTING S
- [SDR 2005FA0000232](https://openairdocs.org/sdr/2005FA0000232.md): Warning Switch · loose · Aug 8, 2004 · N6344Q · Mooney M20F · Landing Gear Position and Warning
  > LANDING GEAR WARNING SWITCH FOUND LOOSE ON THE ATTACH AREA OF THROTTLE CABLE CAUSING INTERMITTENT OPERATION OF HORN. SCREWS WERE TIGHTENED AND SYSTEM OPERATES NORMALLY.(K)
- [SDR 07092004](https://openairdocs.org/sdr/07092004.md): Landing Gear · collapsed · Jul 9, 2004 · N6817V · Mooney M20F · Main Landing Gear
  > LANDING GEAR CIRCUIT BREAKER POPPED, ATTEMPTED TO RESET IT AND SAW SPARKS. PILOT ATTEMPTED MANUAL EXTENSION OF GEAR BUT WAS UNABLE TO GET DOWN AND LOCKED INDICATION. PILOT REPORTED GEAR PROBLEM TO TOWER. GEAR APPEARED TO BE DOWN AND THE PILOT FLEW BY TOWER
- [SDR 2003FA0000848](https://openairdocs.org/sdr/2003FA0000848.md): Camshaft · spalled · Aug 11, 2003 · N3534H · Mooney M20F · Reciprocating Engine Power Section
  > CAMSHAFT, FOUND EVIDENCE OF SEVERE SPALLING ON SEVERAL CAM LOBES. ENGINE HAD APPROX 750 HOURS ON A FACTORY OVERHAUL.
- [SDR 2003FA0000195](https://openairdocs.org/sdr/2003FA0000195.md): Shaft · sheared · Feb 20, 2003 · N9625M · Mooney M20F · Vacuum Distribution System
  > NEW VACUUM PUMP SHAFT SHEARED WITH ONLY 3 HOURS OF OPERATION INSTALLED ON 04/25/2002. BROKE ON 02/19/2003.
- [SDR AUS20021005](https://openairdocs.org/sdr/AUS20021005.md): Bearing · failed · Jul 26, 2002 · Mooney M20F · Reciprocating Engine Power Section
  > (AUS) ENGINE OIL FILTERS CONTAMINATED WITH METAL. SUSPECT CAUSED BY FAILURE OF EITHER MAIN BEARING OR BIGEND BEARING.
- [SDR 2002FA0000864](https://openairdocs.org/sdr/2002FA0000864.md): Structure · corroded · Jul 2, 2002 · N6363Q · Mooney M20F · Fuselage Main, Structure
  > HEADLINER EACH LOCATION THE HEADLINER MATERIAL CAME INTO CONTACT WITH ALUMINUM ATTACH POINTS THE AREA CORRODED THE INTERIOR WAS REPLACED IN THE SUBJECT AIRCRAFT ON MAY 1, 1998 THE CORROSION WAS DISCOVERED DURING MAINTENANCE MAY 17, 2002.
- [SDR 2002FA0000625](https://openairdocs.org/sdr/2002FA0000625.md): Actuator · failed · Apr 26, 2002 · N315SB · Mooney M20F · Landing Gear Actuator
  > WHEN PILOT SELECTED GEAR DOWN INCOMPLETE EXTENSION OCCURRED. ATTEMPTS TO EXTEND THE GEAR MANUALLY ALSO FAILED. AFTER THE AIRCRAFT WAS RETREIVED, PLACED ON JACKS AND BELLY PANELS REMOVED, IT WAS DISCOVERED THE MAIN LANDING GEAR ACTUATOR (DUKES) COUPLING BETW
- [SDR 2002FA0000624](https://openairdocs.org/sdr/2002FA0000624.md): Coupling · failed · Apr 26, 2002 · N315SB · Mooney M20F · Landing Gear Actuator
  > WHEN PILOT SELECTED GEAR DOWN, INCOMPLETE EXTENSION OCCURRED. ATTEMPTS TO EXTEND THE GEAR MANUALLY ALSO FAILED. GEAR COLLAPSED ON LANDING. Z AN INSPECTION FOUND THAT THE COUPLING BETWEEN THE GEAR MOTOR AND ACTUATOR WAS SEPARATED. THE MOTOR WAS FOUND NOT TO
- [SDR 20010604CW012](https://openairdocs.org/sdr/20010604CW012.md): Fuel Cell · contaminated · May 22, 2001 · N301LM · Mooney M20F · Fuel Storage
  > ENGINE LOST POWER, THEN QUIT, DURING TAKEOFF CLIMB. AIRCRAFT MADE OFF AIRPORT LANDING. INVESTIGATION FOUND WATER IN THE RIGHT HAND FUEL SUMP. AIRCRAFT HAD BEEN PARKED OUTSIDE THROUGH HEAVY RAIN.
- [SDR CA010518010](https://openairdocs.org/sdr/CA010518010.md): Plate · cracked · May 3, 2001 · Mooney M20F · Propeller Spinner Section
  > (CAN) CRACK & FAILURE OF FLANGE OF BACKING PLATE THAT HAS BLADE ROOT CLOSING FAIRING ATTACHED.A PORTION OF FAIRING REMAINED ATTACHED TO SPINNER WHICH SEVERELY DAMAGED NOSE BOWL FAIING LEAVING BACKING PLATE&FAIRING DEBRIS INSIDE ENGINE COWL.THERE WAS SOME MINOR
- [SDR 20010518CW001](https://openairdocs.org/sdr/20010518CW001.md): Gyro · contaminated · Apr 30, 2001 · N9514M · Mooney M20F · Attitude Gyro and Indicating System
  > DURING ANNUAL INSPECTION, FOUND LIQUID IN WINDOW OF GYRO, DISCONNECTED LINE TO HAVE WATER FLOW OUT, REMOVED INSTRUMENT. OPENDED CASE AND FOUND LONG-TERM CORROSION ON ALL INTERNAL PARTS. REPLACED WITH OVERHAULED INSTRUMENT. NO OTHER INSTRUMENTS CONTAINED WAT
- [SDR 20000516SH010](https://openairdocs.org/sdr/20000516SH010.md): Buckle · damaged · May 1, 2000 · N7191V · Mooney M20F · Nose/Tail Landing Gear
  > NOSE GEAR BUCKLE OFF AT UPPER TRUSS. POSSIBLY WEAKENED BY OVERTURNING WITH TOW TRACTOR. SUBMITTER SUGGESTED HEAVIER METAL, BETTER SUPERVISION AND TRAINING. (X)
- [SDR 2000ZZZX409](https://openairdocs.org/sdr/2000ZZZX409.md): Nut · loose · Dec 6, 1999 · N3272F · Mooney M20F · Landing Gear Retraction/Extension System
  > LANDING GEAR COLLAPSED ON LANDING. AFTER AIRCRAFT WAS TOWED TO HANGAR AND PLACED ON JACKS, FOUND THE GEAR ACTUATOR JACKSCREW HAD BECOME SEPARATED FROM THE MOTOR/GEAR PORTION OF THE GEAR ACTUATOR. AFTER REMOVAL OF THE ACTUATOR FROM AIRCRAFT AND DISASSEMBLY, D
- [SDR 99ZZZX2427](https://openairdocs.org/sdr/99ZZZX2427.md): Vibrator · mismarked · May 19, 1999 · N4044N · Mooney M20F · Exciter
  > PILOT REPORTED AIRCRAFT HARD TO START. TROUBLESHOT PROBLEM TO INTERMITTENT STARTING VIBRATOR, TCM SYSTEM SUPPORT MANUAL INDICATOR, PN 10-176485-121, TO BE USED WITH S-200 SERIES MAGS. HOWEVER, WHEN UNIT PULLED FROM STOCK PRINTED ON UNIT IN 'RED', USE WITH 12
- [SDR 99ZZZX1642](https://openairdocs.org/sdr/99ZZZX1642.md): Regulator · contaminated · Feb 16, 1999 · N21NA · Mooney M20F · Aircraft Fuel Distribution System
  > ENGINE QUIT WHILE AIRCRAFT WAS FLYING.
- [SDR 98ZZZX3926](https://openairdocs.org/sdr/98ZZZX3926.md): Alternator · failed · Oct 13, 1998 · N5000F · Mooney M20F · DC Generator-Alternator
  > PILOT LOST ALL ELECTRICAL POWER. ON INSPECTION, THE ALTERNATOR FAN WAS FOUND DESTROYED AND LODGED IN THE ALTERNATOR BRACKET AND ENGINE BAFFELS. SUBMITTER STATED POSSIBLE CAUSE SEEMS TO BE FRAME CRACKS OR DAMAGE DONE PREVIOUSLY TO CAUSE A FAN SEPARATION UNDER
- [SDR 98ZZZX3928](https://openairdocs.org/sdr/98ZZZX3928.md): Crankshaft · failed · May 29, 1998 · N6414Q · Mooney M20F · Reciprocating Engine Power Section
  > ENGINE VIBRATED 5-10 SECONDS BEFORE SEIZING, NO OTHER INDICATIONS OF PENDING FAILURE WERE NOTED. AT ENGINE TEARDOWN, THE CRANKSHAFT WAS FOUND BROKEN AT THE FORWARD END OF THE NR 4 CONNECTING ROD JOURNAL. MAINTENANCE RECORDS ONLY WENT BACK TO LAST OVERHAUL AN
- [SDR 98ZZZX886](https://openairdocs.org/sdr/98ZZZX886.md): Battery · poor ground · Feb 19, 1998 · N9612M · Mooney M20F · DC Generating System
  > TROUBLESHOOTING FOR POOR BATTERY CHARGING, INTERMITTENT CRANKING, AND INTERMITTENT GPS/COMM FAILURES, FOUND PAINT ON AIR FRAME STRUCTURE CAUSING POOR BATTERY GROUND. SUBMITTER SUGGESTS REMOVING PAINT UNDER BOLTS AND NUT AND ADD A HEAVY GROUND STRAP.
- [SDR 98ZZZX840](https://openairdocs.org/sdr/98ZZZX840.md): Hose · leaking · Feb 9, 1998 · Mooney M20F · Fuel Indicating System
  > PILOT COMPLAINED THAT FOLLOWING THE LAST SEVERAL FLIGHTS, HE HAD NOTICED FUEL DRIPPING FROM THE RT SIDE OF THE COWLING. MECHANICS THEN PRESSURIZED THE FUEL SYS WITH THE PUMP AND SAW A FAN-SHAPED SPRAY PATTERN EMITTING FROM THE FUEL LINE WHICH LEADS TO THE COC
- [SDR 97ZZZX4212](https://openairdocs.org/sdr/97ZZZX4212.md): Cover Plate · displaced · Aug 1, 1997 · N9595M · Mooney M20F · Reciprocating Engine Cylinder Section
  > ENGINE BEGAN TO RUN ROUGH IN FLIGHT, PRECAUTIONARY LANDING. FOUND INTAKE ROCKER SHAFT ON NR 1 CYLINDER HAD MOVED OUT OF POSITION DUE TO LOSS OF COVER PLATE, 7510. CAUSE OF COVER PLATE LOSS UNDETERMINED. SUBMITTER RECOMMENDS PERIODICAL RE-CHECK OF COVER PLAT
- [SDR 97ZZZX3695](https://openairdocs.org/sdr/97ZZZX3695.md): Valve · stuck · May 20, 1997 · N6950V · Mooney M20F · Reciprocating Engine Cylinder Section
  > ENGINE RAN ROUGH AT TAKEOFF, AIRCRAFT LOST POWER. AIRCRAFT SUSTAINED SUBSTANTIAL DAMAGE DURING A FORCED LANDING. EXAMINATION FOR THE ENGINE REVEALED AN OPEN EXHAUST VALVE, CYLINDER NR 4. ENGINE HAD A CYLINDER, NR 4 EXHAUST VALVE STUCK.
- [SDR 97ZZZX1058](https://openairdocs.org/sdr/97ZZZX1058.md): Pump · failed · Feb 24, 1997 · N9339M · Mooney M20F · Fuel Boost Pump
  > OPERATOR REPORTED THAT EMERGENCY ELECTRIC FUEL PUMP NO LONGER WORKED. UPON REMOVAL AND REPLACMENT OF PUMP, DISCOVERED THE FAILED PUMP HAD BEEN IN SERVICE ON THE AIRCRAFT FOR 23 YEARS. THESE PUMPS ARE STAMPED ON THE PUMP HOUSING TO REPLACE EVERY TEN YEARS. T
- [SDR 96ZZZX2083](https://openairdocs.org/sdr/96ZZZX2083.md): Actuator · failed · Apr 4, 1996 · N24KD · Mooney M20F · Landing Gear Actuator
  > LANDING GEAR FAILED TO EXTEND ELECTRICALLY. MANUAL EXTENSION WAS ATTEMPTED WITH NO EXTENSION. AIRCRAFT LANDED WITH WHEELS UP. INVESTIGATION REVEALED DUKES ACTUATOR (PN 3214-00) PINION GEAR (ADDRESSED IN AD 75-23-04) WORN BEYOND LIMITS CAUSING PINION AND DRI
- [SDR AU960561](https://openairdocs.org/sdr/AU960561.md): Rivet · sheared · Jan 31, 1996 · Mooney M20F · Fuselage Main, Attach Fittings
  > (AUS) HORIZONTAL STABILISER RH ATTACHMENT BRACKET RIVETS (8OFF) SHEARED
- [SDR 95ZZZX5952](https://openairdocs.org/sdr/95ZZZX5952.md): Air Control · wrong part · Sep 1, 1995 · N3506N · Mooney M20F · Engine Air Intake System
  > INSTALLED CONTROL AND FOUND THREADED BULKHEAD SLEEVE TO BE 6 INCHES SHORT OF FIREWALL. INSPECTED MOONEY DWG 940088 DATED 8-28-95 AND FOUND DIMENSIONALLY WRONG FOR MODEL AIRCRAFT. THIS PART IS LISTED AS A RETROFIT WITH A MOVEABLE THREADED SLEEVE (SLEEVE IS CR
- [SDR 95ZZZX4521](https://openairdocs.org/sdr/95ZZZX4521.md): Skin · cracked · Aug 24, 1995 · N6996V · Mooney M20F · Wing, Plate/Skin
  > THE RT WING SKIN AREA THAT IS FORWARD OF THE FLAP, WHERE THE FLAP FITS THE WING CONTOUR WHEN RETRACTED, WAS FOUND CRACKED. THE CRACK IS LOCATED NEXT TO THE INBOARD FLAP ATTACH SUPPORT ON THE UNDERSIDE OF THE RT WING SKIN. THE SUPPORT IS PRIMARILY ATTACHED TO
- [SDR 95ZZZX6141](https://openairdocs.org/sdr/95ZZZX6141.md): Through-Bolt · broken · Apr 25, 1995 · N7112V · Mooney M20F · Reciprocating Engine Power Section
  > SUBJECT NR 1 CYLINDER UPPER THROUGH-BOLT FOUND BROKEN DURING PREFLIGHT. DETECTED AS THE MAJOR REMAINING PORTION AND HOLD-DOWN NUT FOUND BACKED OUT OF POSITION AND LODGED AGAINST CYL FINS. INSTALLED NEW BOLT, SPACER, AND NUT. TORQUED PER LYC SERVICE LETTER 1

Next page: https://openairdocs.org/model/mooney-m20f/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 = 'M20F'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/mooney-m20f/reports

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