# Service difficulty reports: Continental IO-550-G A list on [Continental IO-550-G](https://openairdocs.org/engine/continental-io-550-g.md). Newest first. General aviation reporting is voluntary. - [SDR 2021FA0000006](https://openairdocs.org/sdr/2021FA0000006.md): Spark Plug · failed · Sep 7, 2020 · N3345M · Mooney M20 · Spark Plug/Igniter > A STRING OF 3 IN FLIGHT MAGNETO FAILURES (MAGNETOS PURCHASED/OVERHAULED FROM 2 DIFFERENT SOURCES) OVER THE COURSE OF APPROXIMATELY 100 FLIGHT HOURS WAS LINKED TO BAD TEMPEST FINE WIRE SPARK PLUGS, ONE OF WHICH LOST A CENTER ELECTRODE IN FLIGHT DURING ENGINE OP - [SDR 2017FA0000383](https://openairdocs.org/sdr/2017FA0000383.md): Oil Cooler · damaged · Aug 9, 2017 · N1068G · Mooney M20R · Reciprocating Engine Oil System > DURING AN ANNUAL INSPECTION, MINOR EVIDENCE OF FRETTING FROM VIBRATION WAS SEEN AT OIL COOLER CROSSBAR LOWER AFT CORNER. FURTHER INSPECTION REVEALED A CRACKED WELD ON THE UPPER RT FWD CORNER THAT WAS 1 INCH LONG. REMOVED THE OIL COOLER FOR INSPECTION. THE T - [SDR Q5QA20170412009](https://openairdocs.org/sdr/Q5QA20170412009.md): Spar Web · cracked · Apr 12, 2017 · N525TM · Beech 58 · Wing Spar > DURING A PHASE INSPECTION, CRACKS WERE DISCOVERED ON THE WING CARRY-THRU FORWARD SPAR WEB. - [SDR 2015FA0000316](https://openairdocs.org/sdr/2015FA0000316.md): Display · failed · Jun 22, 2015 · N401PS · Mooney M20R · Central Display > AIRCRAFT DEPARTED. DUE TO AN ODOR OF SMOKE IN THE COCKPIT THE AIRCRAFT RETURNED TO DEPARTURE. LANDED WITHOUT INCIDENT AND WAS TOWED TO THE RAMP. TROUBLESHOOTING REVEALED, SIC MULTI-FUNCTION DISPLAY FAILED. - [SDR 2015FA0000075](https://openairdocs.org/sdr/2015FA0000075.md): Cylinder Head · cracked · Jan 26, 2015 · N1068G · Mooney M20R · Reciprocating Engine Cylinder Section > FOUND CRACK IN CYLINDER HEAD BETWEEN THE SPARK PLUG HOLE AND THE INJECTOR HOLE AT ANNUAL INSPECTION AT 1,314.4 HRS. CYLINDER LEAK DOWN WAS 24/80 AND IT WAS DISCOVERED THAT THE MAJORITY OF THE AIR WAS GOING PAST THE INTAKE VALVE DUE TO CORE SHIFT IN THE CASTIN - [SDR 2015FA0000025](https://openairdocs.org/sdr/2015FA0000025.md): Bolt · loose · Sep 29, 2014 · N20098 · Mooney M20S · Engine Mount Section > DURING ANNUAL INSPECTION, IT WAS DISCOVERED THE UPPER ENGINE MOUNT TO FIREWALL BOLTS HAD INSUFFICIENT TORQUE DUE TO THE FIREWALL INSULATION COMPRESSED BETWEEN THE INTERIOR TUBULAR STRUCTURE AND THE FIREWALL. THIS IDENTICAL CONDITION IS ADDRESSED IN AD 2007-05- - [SDR PAI520121408991](https://openairdocs.org/sdr/PAI520121408991.md): Wire · arced · Aug 14, 2012 · N95KM · Beech 58 · Electrical Power System Wiring > PILOT REPORTED LT ALTERNATOR INTERMITTENT. MX FOUND THE B+ POWER WIRE CHAFED AT THE ENGINE INTAKE MANIFOLD, APPROX 6" BELOW ALTERNATOR. FOUND A SMALL HOLE ARCED THROUGH THE INTAKE MANIFOLD. WIRING WAS NOT SECURED PROPERLY IN THIS AREA. ENGINE TSO 438.4 - [SDR 2011FA0000746](https://openairdocs.org/sdr/2011FA0000746.md): Actuator · noisy · Nov 15, 2011 · N15PD · Mooney M20R · Landing Gear Actuator > DURING ROUTINE INSPECTION OF ACFT LANDING GEAR RETRACTION SYS, THE LANDING GEAR ACTUATOR WAS EXCESSIVELY NOISEY WHEN THE LANDING GEAR WAS RETRACTED AND EXTENDED.AFTER FURTHER EXAMINATION OF THE ACTUATOR IT WAS DISCOVERED THAT THE (INTERNAL) BOLTS THAT SECURE T - [SDR FAA1020001](https://openairdocs.org/sdr/FAA1020001.md): Selector Valve · stuck · Sep 21, 2006 · N533LJ · Mooney M20R · Fuel Selector/Shut-Off Valve > FUEL SELECTOR VALVE STUCK IN (OFF) POSITION WHILE AIRCRAFT WAS SITTING ON THE RAMP. ONCE STUCK IN THE OFF POSITION, IT BECAME IMPOSSIBLE TO TURN USING HAND FORCE. (K) - [SDR 2005FA0001044](https://openairdocs.org/sdr/2005FA0001044.md): Gascolator · leaking · Jul 14, 2005 · N10368 · Mooney M20R · Aircraft Fuel System > DURING TROUBLESHOOTING, IT WAS DISCOVERED THAT THE GASCOLATOR WAS ALLOWING AIR TO BE INTRODUED INTO THE SHIPS FUEL SYSTEM PRIOR TO THE FUEL REACHING THE ENGINE DRIVEN FUEL PUMP. INSTALLING A NEW GASCOLATOR RESOLVED THE PROBLEM. (K) - [SDR 2005FA0000176](https://openairdocs.org/sdr/2005FA0000176.md): Oil Cooler · cracked · Feb 1, 2005 · N2138Z · Mooney M20R · Engine Oil Cooler > DURING ROUTINE OIL CHANGE, AN EXAMINATION OF THE OIL COOLER FLANGE AREA WHERE IT BOLTS ONTO THE ENGINE STUDS WAS FOUND TO BE CRACKED. THE CRACK WAS LOCATED BETWEEN THE STUDS MOUNTING AREA IN THE OIL COLLER SURFACE WELD. THIS IS THE FOURTH INSTANCE OF AN OIL - [SDR 2005FA0000950](https://openairdocs.org/sdr/2005FA0000950.md): Pump · failed · Jan 15, 2005 · N10368 · Mooney M20R · Engine Fuel Pump > THIRD FUEL PUMP FAILURE ON AIRCRAFT/ENGINE IN APPROX 90 HRS. FUEL PUMP RETURNED TO CONT FOR ANALYSIS BUT THEY WERE NOT ABLE TO LOCATE FOR TESTING/ANALYSIS. NEITHER MOONEY OR CONTINENTAL HAVE BEEN ABLE TO DETERMINE CAUSE OF PUMP FAILURES. - [SDR 2005FA0000946](https://openairdocs.org/sdr/2005FA0000946.md): Pump · failed · Apr 28, 2004 · N10368 · Mooney M20R · Engine Fuel Pump > ENGINE FAILED ON FINAL APPROACH. WAS ABLE TO RESTART AFTER LANDING BUT HAD TO PULL THE MIXTURE CONTROL LEAN ABOUT 1INCH TO KEEP IT RUNNING. AFTER COOLDOWN, MIXTURE WAS OK AGAIN. THIS IS THE FIRST OF 3 FUEL PUMP FAILURES ON THIS AIRCRAFT/ENGINE IN APPROX 90 - [SDR 2004FA0000216](https://openairdocs.org/sdr/2004FA0000216.md): Roll Pin · sheared · Feb 17, 2004 · N909WM · Mooney M20R · Main Landing Gear > SHEAR PINS ON LT MLG TUBE ASSEMBLY FAILED. AFT INSERT SEPARATED FROM TUBE ASSEMBLY. LT MAIN GEAR SUBSEQUENTLY REMAINED UNSAFE AND RETRACTED UPON CONTACT WITH RUNWAY. RT MLG AND NOSE GEAR WERE IN THE DOWN AND LOCKED AT TIME OF LT MLG FAILURE. - [SDR 2004FA0000054](https://openairdocs.org/sdr/2004FA0000054.md): Cylinder · cracked · Jan 9, 2004 · N39HW · Mooney M20R · Reciprocating Engine Cylinder Section > ENGINE INTAKE TUBE P/N 646207 FOR THE NR 6 CYLINDER CRACKS OUT AT ITS CYLINDER FLANGE. THIS ENGINE HAS CRACKED 3 INTAKE TUBES. THE CRACKS HAVE BEEN FOUND FROM.5000 INCH LONG TO OVER 3 INCHES LONG. THIS CAUSES AN INTAKE FUEL LEAK AND FIRE HAZARD. THE INTAK - [SDR 2003FA0000183](https://openairdocs.org/sdr/2003FA0000183.md): Bearing · disintegrated · Feb 18, 2003 · N134MC · Mooney M20R · Cabin Cooling System > DURING INSTALLATION OF AN AIR/OIL SEPARATOR, REMOVED THE AIR CONDITIONER ACCESSORY DRIVE OFF THE STARTER SHAFT TO INSTALL AN OIL RETURN FITTING FOR THE AIR/OIL SEPARATOR. UPON REMOVAL OF THE ACCESSORY DRIVE HOUSING, PIECES OF THE AIR CONDITIONER DRIVE BEARING - [SDR 2003FA0000131](https://openairdocs.org/sdr/2003FA0000131.md): Distributor Gear · stripped · Jan 24, 2003 · N326TJ · Mooney M20R · Magneto/Distributor > DISTRIBUTOR GEAR, MAGNETO INOPERATIVE ON RUN-UP ON INSPECTION FOUND TEETH SHEARED IN DISTRIBUTOR GEAR-90 DEGREES. - [SDR 2002FA0001257](https://openairdocs.org/sdr/2002FA0001257.md): Nut · separated · Oct 22, 2002 · N41MF · Amtr LANCAIR · DC Generator-Alternator > NUT SECURING ALTERNATOR DRIVE GEAR CAME OFF. GEAR SUBSEQUENTLY FELL OFF OF ALTERNATOR SHAFT DAMAGING INTERNAL ENGINE GEARS. - [SDR 2002FA0001180](https://openairdocs.org/sdr/2002FA0001180.md): Clamp · worn · Oct 12, 2002 · N101DX · Mooney M20R · Power Lever > OWNER COMPLAINED THAT HE WAS UNABLE TO CLOSE THROTTLE TO LAND. THE MIXTURE HAD TO BE MOVED TO CUT-OFF TO LAND. INVESTIGATION REVEALED THAT THE THROTTLE CABLE HOUSING WAS MOVING IN THE CLAMP LOCATED AT THE THROTTLE BODY PREVENTING THE THROTTLE FROM CLOSING AL - [SDR 2002FA0001156](https://openairdocs.org/sdr/2002FA0001156.md): Bulkhead · cracked · Sep 30, 2002 · N101DX · Mooney M20R · Propeller Spinner Section > THE SPINNER BULKHEAD WAS FOUND CRACKED COMPLETELY AROUND THE CIRCUMFERENCE OF THE MOUNTING FLANGE. THE TOTAL TIME ON THE SPINNER ASSEMBLY IS 315.5 HOURS. THIS IS THE THIRD CRACKED BULKHEAD FOUND ON THIS AIRCRAFT. THE TIME IN SERVICE OF THIS BULKHEAD IS 42.8 - [SDR 2002FA0000753](https://openairdocs.org/sdr/2002FA0000753.md): Rod End · broken · May 8, 2002 · N1008 · Luscmb PHANTOM1 · Landing Gear Retraction/Extension System > ROD-END BEARING FAILED ON RIGHT RETRACT ROD. - [SDR 2002FA0000755](https://openairdocs.org/sdr/2002FA0000755.md): Rod End · broken · May 8, 2002 · N10081 · Mooney M20R · Landing Gear Retraction/Extension System > ROD-END BEARING FAILED ON RIGHT RETRACT ROD. - [SDR 2001FA0000241](https://openairdocs.org/sdr/2001FA0000241.md): Tube · cracked · May 22, 2001 · N46WB · Mooney M20R · Engine Air Intake System > INDUCTION TUBE AT NR 6 CYLINDER IS COMPLETELY CRACKED AT FLANGED END. - [SDR 99ZZZX3474](https://openairdocs.org/sdr/99ZZZX3474.md): Injector · failed · Aug 17, 1999 · N21625 · Mooney M20R · Fuel Injector Nozzle > NEW AIRCRAFT AND NEW ENGINE. ENGINE RAN ROUGH ON TAKEOFF, TOP COWL REMOVED AND COLD CYLINDER ESTABLISHED. UPON REMOVAL OF FUEL MANIFOLD, WRENCH WAS APPLIED TO INJECTOR AND ASSY TWISTED IN HALF. INJECTOR WAS BROKEN LONG BEFORE ATTEMPTED REMOVAL. A SECOND IN - [SDR 20000714SH028](https://openairdocs.org/sdr/20000714SH028.md): Rod End · loose · Mar 23, 1999 · N995K · Mooney M20R · Landing Gear Retraction/Extension System > DURING ROUTINE ANNUAL INSP, FOUND EXCESSIVE PLAY AT ROLL PINS USED TO HOLD ROD ENDS IN PLACE FOR GEAR DOWN RETRACT/EXTENSION ROD ASSY AT LEAST.1250 INCH PLAY NOTED AT AFT END ALLOWING INNER TUBE INSERT FORE/AFT MOVEMENT WHERE ROLL PINS SECURE FWD END OF TUBE ## 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 = 'IO550G' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/engine/continental-io-550-g/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.