# Service difficulty reports: N4123C A list on [N4123C](https://openairdocs.org/aircraft/N4123C.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR VJ32002F00017](https://openairdocs.org/sdr/VJ32002F00017.md): Bushing · seized · Mar 18, 2002 · N4123C · Piper PA34220T · Control Column Section > THE CONTROLS LOCKED UP IN FLIGHT. THE PILOT WAS ABLE TO UNLOCK THE CONTROL IN FLIGHT WITH A JERK; AFTER THE CONTROLS WERE FREE THE PILOT NOTICED THAT THE BUSING ON THE RIGHT CONTROL YOKE WAS FROZEN TO THE SHAFT OF THE CONTROL YOKE. SEE DETAILS ATTRACTED FRO - [SDR 20001102SH002](https://openairdocs.org/sdr/20001102SH002.md): Controller · stuck · Oct 12, 2000 · N4123C · Piper PA34220T · Fuel Control/Reciprocating Engines > THE CONTROLLER PISTON STICK IN. A SPLIT IN POWER SETTING IN-FLIGHT AND ON THE GROUND. CONTROLLER REPLACED. (X) - [SDR 20001101SH031](https://openairdocs.org/sdr/20001101SH031.md): Controller · stuck · Oct 12, 2000 · N4123C · Piper PA34220T · Fuel Control/Reciprocating Engines > THE CONTROLLER PISTON STICK IN. A SPLIT IN POWER SETTING IN-FLIGHT AND ON THE GROUND. CONTROLLER REPLACED. (X) - [SDR 20000911SH040](https://openairdocs.org/sdr/20000911SH040.md): Servo · faulty · Aug 21, 2000 · N4123C · Piper PA34220T · Fuel Control/Reciprocating Engines > UNABLE TO ADJUST FUEL FLOW AT IDLE. (X) - [SDR 20000925SH032](https://openairdocs.org/sdr/20000925SH032.md): Servo · failed · Aug 17, 2000 · N4123C · Piper PA34220T · Fuel Control/Reciprocating Engines > THROTTLE HARD TO MOVE IN FLIGHT, SERVO REMOVED AND A NEW ONE INSTALLED. OVER FOUR POUNDS TO MOVE CONTROL. (X) - [SDR 20000925SH031](https://openairdocs.org/sdr/20000925SH031.md): Control Cable · frayed · Aug 15, 2000 · N4123C · Piper PA34220T · Aileron Control System > LEFT HAND AILERON BALANCE CABLE FRAYED AT WING ROOT PULLEY. (X) - [SDR 20000925SH030](https://openairdocs.org/sdr/20000925SH030.md): Control Cable · frayed · Aug 15, 2000 · N4123C · Piper PA34220T · Aileron Control System > RIGHT HAND AILERON BALANCE CABLE FRAYED AT WING ROOT PULLEY. (X) - [SDR 20000911SH039](https://openairdocs.org/sdr/20000911SH039.md): Control Cable · frayed · Aug 15, 2000 · N4123C · Piper PA34220T · Trailing Edge Flap Control System > FLAP SELECTOR CABLE FRAYED WHERE THE CABLE GOES AROUND THE PULLEYS AT THE FLAP SELECTOR. (X) - [SDR 20000911SH038](https://openairdocs.org/sdr/20000911SH038.md): Control Cable · frayed · Aug 15, 2000 · N4123C · Piper PA34220T · Aileron Control System > LEFT HAND AILERON BALANCE CABLE FRAYED AT WING ROOT PULLEY. (X) - [SDR 20000911SH037](https://openairdocs.org/sdr/20000911SH037.md): Control Cable · frayed · Aug 15, 2000 · N4123C · Piper PA34220T · Aileron Control System > RIGHT HAND AILERON BALANCE CABLE FRAYED AT WING ROOT PULLEY. (X) - [SDR 20000809SH024](https://openairdocs.org/sdr/20000809SH024.md): Control Cable · frayed · Jul 24, 2000 · N4123C · Piper PA34220T · Stabilizer Control System > LOWER AFT STABILATOR DOWN CONTROL CABLE FRAYED. FRAYING OCCURRED AT STA 222.43. (X) - [SDR 99ZZZX4486](https://openairdocs.org/sdr/99ZZZX4486.md): Servo · failed · Sep 28, 1999 · N4123C · Piper PA34220T · Fuel Control/Reciprocating Engines > ENGINE RAN RICH, UNABLE TO ADJUST IDLE MIXTURE. SERVO SENT TO PRECISION FOR REPAIR. - [SDR 99ZZZX4476](https://openairdocs.org/sdr/99ZZZX4476.md): Servo · failed · Sep 27, 1999 · N4123C · Piper PA34220T · Fuel Control/Reciprocating Engines > ENGINE RAN RICH, UNABLE TO ADJUST IDLE MIXTURE. SERVO SENT TO PRECISION FOR REPAIR. - [SDR 99ZZZX4485](https://openairdocs.org/sdr/99ZZZX4485.md): Servo · failed · Sep 16, 1999 · N4123C · Piper PA34220T · Fuel Control/Reciprocating Engines > ENGINE RAN RICH, UNABLE TO ADJUST IDLE MIXTURE. SERVO SENT TO RPECISION FOR REPAIR. - [SDR 99ZZZX4482](https://openairdocs.org/sdr/99ZZZX4482.md): Servo · failed · Sep 16, 1999 · N4123C · Piper PA34220T · Fuel Control/Reciprocating Engines > ENGINE RAN RICH, UNABLE TO ADJUST IDLE MIXTURE. SERVO SENT TO PRECISION FOR REPAIR. - [SDR 99ZZZX4477](https://openairdocs.org/sdr/99ZZZX4477.md): Servo · failed · Sep 16, 1999 · N4123C · Piper PA34220T · Fuel Control/Reciprocating Engines > ENGINE RAN RICH, UNABLE TO ADJUST IDLE MIXTURE. SERVO SENT TO PRECISION FOR REPAIR. - [SDR 99ZZZX4478](https://openairdocs.org/sdr/99ZZZX4478.md): Servo · failed · Sep 13, 1999 · N4123C · Piper PA34220T · Fuel Control/Reciprocating Engines > ENGINE RAN RICH, UNABLE TO ADJUST IDLE MIXTURE. SERVO SENT TO PRECISION FOR REPAIR. THIS SERVO HAS 49 HRS TT SINCE NEW. ZERO HRS SINCE PRECISION REPAIRED SERVO AT ATCA. - [SDR 99ZZZX4484](https://openairdocs.org/sdr/99ZZZX4484.md): Servo · failed · Sep 4, 1999 · N4123C · Piper PA34220T · Fuel Control/Reciprocating Engines > ENGINE RAN RICH, UNABLE TO ADJUST IDLE MIXTURE. SERVO SENT TO PRECISION FOR REPAIR. - [SDR 99ZZZX4483](https://openairdocs.org/sdr/99ZZZX4483.md): Servo · failed · Sep 4, 1999 · N4123C · Piper PA34220T · Fuel Control/Reciprocating Engines > ENGINE RAN RICH, UNABLE TO ADJUST IDLE MIXTURE. SERVO SENT TO PRECISION FOR REPAIR. - [SDR 99ZZZX4481](https://openairdocs.org/sdr/99ZZZX4481.md): Servo · failed · Aug 27, 1999 · N4123C · Piper PA34220T · Fuel Controlling System > ENGINE RAN RICH, UNABLE TO ADJUST IDLE MIXTURE. REMOVED SERVO FROM ENGINE AND INSPECTED IDLE MIXTURE PLATE FOR GALLING, PLATE WAS FOUND GALLED. SERVO SENT TO PRECISION FOR REPAIR. THIS SERVO HAS ZERO HOURS TT SINCE NEW. ZERO HRS SINCE PRECISION REPAIRED SE - [SDR 99ZZZX4480](https://openairdocs.org/sdr/99ZZZX4480.md): Servo · failed · Aug 27, 1999 · N4123C · Piper PA34220T · Fuel Control/Reciprocating Engines > ENGINE RAN RICH, UNABLE TO ADJUST IDLE MIXTURE. REMOVED SERVO FROM ENGINE AND INSPECTED IDLE MIXTURE PLATE FOR GALLING, PLATE WAS FOUND GALLED. SERVO SENT TO PRECISION FOR REPAIR. THIS SERVO HAS ZERO HRS TT SINCE NEW. ZERO HRS SINCE PRECISION REPAIRED SERVO - [SDR 99ZZZX4479](https://openairdocs.org/sdr/99ZZZX4479.md): Servo · failed · Aug 27, 1999 · N4123C · Piper PA34220T · Fuel Control/Reciprocating Engines > ENGINE RAN RICH, UNABLE TO ADJUST IDLE MIXTURE. REMOVED SERVO FROM ENGINE AND INSPECTED IDLE MIXTURE PLATE FOR GALLING, PLATE WAS FOUND GALLED. SERVO SENT TO PRECISION FOR REPAIR. THIS SERVO HAS 930 HRS TT SINCE NEW. ZERO HRS SINCE PRECISION REPAIRED SERVO - [SDR 99ZZZX3582](https://openairdocs.org/sdr/99ZZZX3582.md): Mixture Plate · galled · Aug 26, 1999 · N4123C · Piper PA34220T · Fuel Controlling System > ENGINE RAN RICH, UNABLE TO ADJUST IDLE MIXTURE. REMOVED SERVO FROM ENGINE AND INSPECTED IDLE MIXTURE PLATE FOR GALLING. PLATE WAS FOUND GALLED. SERVO SENT TO PRECISION FOR REPAIR. THIS SERVO HAS 24 HOURS TT SINCE NEW. 8 HOURS SINCE PRECISION REPAIRED SERV - [SDR 99ZZZX984](https://openairdocs.org/sdr/99ZZZX984.md): Fuel Servo · mismanufactured · Jan 19, 1999 · N4123C · Piper PA34220T · Fuel Control/Reciprocating Engines > NEW FUEL SERVO INSTALLED ON AIRCRAFT. FUEL LEAK AT FUEL INLET. REMOVED ADAPTER FROM UNIT, O-RING PACKING, PN 951789, WAS MISSING. SUBMITTER STATED THIS WAS A NEW SERVO AND ALL FITTINGS INSTALLED WERE TORQUED. - [SDR 98ZZZX2162](https://openairdocs.org/sdr/98ZZZX2162.md): O-Ring · wrong part · May 15, 1998 · N4123C · Piper PA34220T · Landing Gear Actuator > TWO PREVIOUS O-RING FAILURES AND FOUR O-RING INSPECTIONS REVEALING O-RING DAMAGE ON ANOTHER AIRCRAFT PROMPTED INSPECTION OF ALL ACTUATORS ON THIS AIRCRAFT (FAILURE RESULTS IN INCOMPLETE GEAR RETRACTION). UPON DISASSEMBLY, FOUND INCORRECT O-RINGS INSTALLED ON ## 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 n_number = 'N4123C' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N4123C/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.