# Service difficulty reports: Lycoming TIO-540-C1A A list on [Lycoming TIO-540-C1A](https://openairdocs.org/engine/lycoming-tio-540-c1a.md). Newest first. General aviation reporting is voluntary. - [SDR HYIA20230215002](https://openairdocs.org/sdr/HYIA20230215002.md): Fuel Rail · leaking · Jan 25, 2023 · N699CA · Tecnam P2012 · Engine Fuel Distribution > PILOT REPORTED FUEL SMELL DURING FLIGHT. MAINTENANCE INSPECTED AND WHILE TROUBLESHOOTING FOUND RIGHT ENGINE INBOARD FUEL RAIL LEAKING AT WELD IN VICINITY OF #2 CYLINDER INJECTOR AT MALE B NUT. THE FUEL RAIL ASSEMBLY WAS REPLACED WITH NO FURTHER DEFECT NOTED. E - [SDR 2016FA0000292](https://openairdocs.org/sdr/2016FA0000292.md): Attach Bolt · sheared · Jun 14, 2016 · N170TA · Piper PA23250 · Main Landing Gear > UPON UNEVENTFUL LANDING ON ROLLOUT, RT GEAR COLLAPSED. UPON INSPECTION FOUND CENTER MAIN GEAR DRAG LINK BOLT, PN 691-327, ALTERNATE PN NAS6607D38, SHEARED ALLOWING GEAR TO FOLD BACKWARDS CAUSING DAMAGE TO REAR GEAR DOOR, LOWER NACELLE SKIN AND RIGHT FLAP. REC - [SDR CA141202034](https://openairdocs.org/sdr/CA141202034.md): Support Tube · cracked · Nov 27, 2014 · Piper PA23250 · Main Landing Gear Attach Section > (CAN) DURING A 100 HR INSPECTION THE DRAG LINK FITTING SUPPORT TUBE ASSEMBLY (P/N 1742002) WAS FOUND CRACKED AT THE AFT LOWER ATTACH BOLT HOLE. - [SDR CA120518007](https://openairdocs.org/sdr/CA120518007.md): Bolt · missing · May 17, 2012 · Piper PA23250 · Exhaust Turbocharger > (CAN) OIL SUMP BOLTS FOR THE TURBO EXHAUST STAYS ON BOTH ENGINES, LT SNAPPED, RT MISSING. CAUSED THE EXHAUST STAY TO WEAR INTO THE OIL SUMPS, PAINT WEAR ON LT ENGINE, HOLE IN OIL SUMP FOR THE RT ENGINE. WHICH RESULTED IN AN OIL LEAK ON THE RT ENGINE. - [SDR CA120321010](https://openairdocs.org/sdr/CA120321010.md): Nut · loose · Mar 13, 2012 · Piper PA23250 · Engine Fuel Pump > (CAN) DIAPHRAM LEAKING AT PLUNGER NUT. NUT FOUND LOOSE. - [SDR CA120307008](https://openairdocs.org/sdr/CA120307008.md): Wheel Half · cracked · Mar 6, 2012 · Piper PA23250 · Wheel/Ski/Float > (CAN) MULTIPLE RADIAL CRACKS EMINATING FROM THE CENTER OF THE WHEEL WHERE THE BEARING CUP SITS. - [SDR CA120307009](https://openairdocs.org/sdr/CA120307009.md): Wheel Half · cracked · Mar 6, 2012 · Piper PA23250 · Wheel/Ski/Float > (CAN) 4" CRACK ON BEAD OF INNER WHEEL HALF OF THE MAIN WHEEL ASSY. - [SDR CA110808007](https://openairdocs.org/sdr/CA110808007.md): Trim System · binding · Aug 1, 2011 · Piper PA23250 · Elevator Control System > DURING SLOW CRUISE OPERATION AT ALTITUDE, THE STABILATOR TRIM WAS MOVED NOSE UP. WHEN THE PILOT APPLIED POWER TO RESUME NORMAL FLIGHT OPERATIONS, THE ACFT DID NOT RESPOND TO TRIM INPUTS. THE ELECTRIC TRIM DID NOT MOVE THE MANUAL TRIM HANDLE AS IT DOES IN NORM - [SDR CA111117007](https://openairdocs.org/sdr/CA111117007.md): Governor · leaking · May 19, 2011 · Piper PA23250 · Propeller Controlling System > (CAN) OIL LEAK FOUND AT PROPELLER GOVERNOR HEAD GASKET AT INSPECTION. - [SDR 2010FA0000072](https://openairdocs.org/sdr/2010FA0000072.md): Line · loose · Jan 26, 2010 · N23WB · Piper PA23250 · Aircraft Fuel Distribution System > ON APPROACH, TOWER NOTIFIED ACFT THAT SMOKE WAS COMING OUT OF THE LT ENGINE. ON LANDING, LT ENGINE WAS SHUTDOWN AND ACFT TAXIED OFF THE ACTIVE RUNWAY. ACFT WAS MET BY THE FIRE DEPARTMENT AND THE LT ENGINE FIRE WAS EXTINGUISHED. ACFT WAS TOWED AND NOT WORKED O - [SDR CA080625002](https://openairdocs.org/sdr/CA080625002.md): Connector · loose · Apr 29, 2008 · Piper PA23250 · Hydraulic Power System Wiring > (CAN) HYDR FLUID NOTED LEAKING FROM MANUAL HYDR HAND PUMP UPON POST-TAKEOFF GEAR RETRACTION. ATTEMPT TO RE-EXTEND GEAR WITH STANDARD SYS OR MANUAL HAND PUMP FAILED. CO2 EMERGENCY DEPLOYED, GEAR EXTENSION UNSUCCESSFUL. S-PIN ON BACK OF PRIORITY VALVE REMOVED BY - [SDR FCPR20070110](https://openairdocs.org/sdr/FCPR20070110.md): Diaphragm · failed · Dec 8, 2007 · Piper PA23250 · Engine Fuel Pump > PUMP VALVE REGULATOR DIAPHRAGM FAILED AT GUIDE PIN, PUMP WOULD NOT FUNCTION. - [SDR CA070918005](https://openairdocs.org/sdr/CA070918005.md): Piston Ring · damaged · Sep 7, 2007 · Piper PA23250 · Reciprocating Engine Cylinder Section > (CAN) THE PROBLEM STARTED WITH HIGH OIL TEMP ON LT ENG, NEAR THE RED LINE IN TURBOBOOST AND WITH SMALL SPLIT OF MANIFOLD PRESS BETWEEN BOTH ENGINES. WE TROUBLESHOOT ALL SYS REGARDING HIGH OIL TEMP AND MANIFOLD PRESS UNTIL REPLACEMENT OF TURBO BY ITSELF BUT WIT - [SDR 2006FA0001208](https://openairdocs.org/sdr/2006FA0001208.md): Line · leaking · Oct 10, 2006 · N6879A · Piper PA23250 · Fuel Controlling System > FUEL LEAKING, TURBOCHARGER AIR LINE TO FUEL PUMP. (K) - [SDR 2006FA0001209](https://openairdocs.org/sdr/2006FA0001209.md): Line · leaking · Oct 10, 2006 · N6879A · Piper PA23250 · Engine Fuel Distribution > FUEL LEAKING OUT TURBOCHARGER AIR LINE TO FUEL PUMP. (K) - [SDR 2006FA0001210](https://openairdocs.org/sdr/2006FA0001210.md): Turbocharger · leaking · Oct 10, 2006 · N6879A · Piper PA23250 · Engine Fuel Distribution > FUEL LEAKING OUT TURBOCHARGER AIR LINE TO FUEL PUMP. (K) - [SDR 2006FA0001211](https://openairdocs.org/sdr/2006FA0001211.md): Line · leaking · Oct 10, 2006 · N6879A · Piper PA23250 · Engine Fuel Distribution > FUEL LEAKING OUT TURBOCHARGER AIR LINE TO FUEL PUMP. (K) - [SDR CA060817006](https://openairdocs.org/sdr/CA060817006.md): Ring · delaminated · Aug 4, 2006 · Piper PA23250 · Reciprocating Engine Cylinder Section > (CAN) THE TECHNICIANS OBSERVED AN ABNORMAL LOSS OF COMPRESSION ON SOME CYLINDERS FOLLOWING A ROUTINE INSPECTION. THEY REMOVED THE CYLINDERS AND SENT THEM TO OUR SHOP FOR INVESTIGATION. WE OBSERVED A DELAMINATION OF CHROME PLATING ON THE CYLINDER RINGS. WE REPA - [SDR CA040601004](https://openairdocs.org/sdr/CA040601004.md): Gear · broken · May 20, 2004 · Piper PA23250 · Reciprocating Engine Power Section > RIGHT ENGINE STOP DURING FLIGHT. FOUND SPRING PIN OF CRANKSHAFT GEAR BROKEN. WHEN THE CRANKSHAFT WAS REMOVED, THE CHANKSHAFT BOLT SHEARED AND BROKE EASILY. THIS BOLT IS SUBJECT TO AD 2002-23-06AND AD 2004-04-25C. THE NEW BOLT KIT WAS REPLACED (MARCH 18, 200 - [SDR 2004FA0000789](https://openairdocs.org/sdr/2004FA0000789.md): Pump · failed · Apr 28, 2004 · N54MV · Piper PA23250 · Engine Fuel Pump > FUEL LEAKING INTO MANIFOLD REFERENCE LINE. PILOT EXPERIENCED INFLIGHT ROUGH ENGINE WHEN AUXILIARY FUEL PUMP WAS TURNED ON. FUEL CONTINUED TO RUN ONTO THE GROUND AFTER ENGINE SHUTDOWN. - [SDR 2004FA0000790](https://openairdocs.org/sdr/2004FA0000790.md): Pump · failed · Apr 28, 2004 · N54MV · Piper PA23250 · Engine Fuel Pump > FUEL LEAKING INTO MANIFOLD REFERENCE LINE. PILOT EXPERIENCED INFLIGHT ROUGH ENGINE WHEN AUXILIARY FUEL PUMP TURNED ON. FUEL CONTINUED TO RUN ON GROUND AFTER ENGINE SHUTDOWN. PROBABLE CAUSE: MFG DEFECT: LEAKING DIAPHRAGM. - [SDR 2003FA0001116](https://openairdocs.org/sdr/2003FA0001116.md): Coupling · mismanufactured · Oct 8, 2003 · N65SC · Piper PA23250 · Exhaust Turbocharger > EXHAUST V-BAND COUPLING NEEDED FOR TURBOCHARGER OUTLET/ TAILPIPE CONNECTION ON THIS AC. ORIGINAL PN 555-511 WAS SUPERSEDED BY MFG TO THE PN 557-584 WILL NOT WORK. THE COUPLING GAP FULLY CLOSED AND BOTTOMED OUT BEFORE ADEQUATE TORQUE WAS REACHED. CONTACTED M - [SDR CA030401001](https://openairdocs.org/sdr/CA030401001.md): Tube · cracked · Mar 31, 2003 · Piper PA23250 · Main Landing Gear > (CAN) THREE CRACKS WERE FOUND ON THE RT MLG OUTBOARD TUBE ASSEMBLY OF THE DRAG LINK FITTING SUPPORT. THE CRACKS ARE LOCATED AROUND THE LOWER MOUNTING BOLT HOLE OF THE TUBE ASSEMBLY. AFTER REMOVAL OF THE DRAG LINK SUPPORT ASSEMBLY, THE FORWARD SUPPORT FITTING - [SDR CA030401002](https://openairdocs.org/sdr/CA030401002.md): Fitting · cracked · Mar 31, 2003 · Piper PA23250 · Landing Gear Retraction/Extension System > (CAN) THREE CRACKS WERE FOUND ON THE RIGHT MAIN LANDING GEAR OUTBOARD TUBE ASSEMBLY P/N 1742002 OF THE DRAG LINK FITTING SUPPORT. THE CRACKS ARE LOCATED AROUND THE LOWER MOUNTING BOLTHOLE OF THE TUBE ASSEMBLY.AFTER REMOVAL OF THE DRAG LINK SUPPORT ASSEMBLY, T - [SDR CA021115023](https://openairdocs.org/sdr/CA021115023.md): Rib · cracked · Nov 15, 2002 · Piper PA23250 · Ailerons > (CAN) DURING 100 HOURS INSPECTION, FOUND RT AILERON INBOARD TRAILING EDGE RIB CRACKED AROUND BOTTOM MOUNTING NUT. UPON REMOVAL OF RIB, THE AILERON SPAR IS ALSO CRACKED AT SAME LOCATION. - [SDR CA021115024](https://openairdocs.org/sdr/CA021115024.md): Spar · cracked · Nov 15, 2002 · Piper PA23250 · Ailerons > (CAN) FOUND RT AILERON INBOARD TRAILING EDGE RIB CRACKED AROUND BOTTOM MOUNTING HOLE.UPON REMOVAL OF RIB, FOUND SPAR IS ALSO HAS A 1/2 INCH CRACKED BESIDE BOTTOM MOUNTING HOLE. - [SDR 2002FA0000911](https://openairdocs.org/sdr/2002FA0000911.md): Wastegate Valve · separated · Jul 17, 2002 · N40454 · Piper PA23250 · Engine Collector/Tailpipe/Nozzle > LT ENGINE EXHAUST BACK PRESSURE SEPARATED (PN LW 11657) WASTE GATE MALE FROM (PN LW 11656) FEMALE. (PN LW 1165) U BOLT WAS NOT LOOSE. - [SDR 2001FA0000584](https://openairdocs.org/sdr/2001FA0000584.md): Cylinder · delaminated · Nov 14, 2001 · Piper PA25 · Reciprocating Engine Cylinder Section > LYCOMING CYLINDER PN LW12429 WITH A CERMINILL COATING FROM ECI DELAMINATED. THE AREA WAS ABOUT 1.5 INCHES IN LENGTH AND ABOUT.250 WIDE AT THE TOP OF THE CYLINDER BORE, ABOVE THE PISTON RING TRAVEL. THE PROBABLE CAUSE WAS CORROSION UNDER THE CERMINILL COATIN - [SDR 20000330SH006](https://openairdocs.org/sdr/20000330SH006.md): Dipstick · separated · Mar 22, 2000 · N9452C · Piper PA32RT300T · Reciprocating Engine Oil System > PILOT REPORTED TO REPAIR SHOP, THAT AFTER LANDING, HE HAD AN OIL LEAK IN THE ENGINE AREA. AFTER INSPECTION, FOUND THAT DIP ROD IN THE OIL CAP WAS NOT INSTALLED IN THE CAP AND HAD FALLEN DOWN INTO THE OIL FILL TUBE OF THE ENGINE. UNDER INSPECTION WITH A MAGNI - [SDR 99ZZZX119](https://openairdocs.org/sdr/99ZZZX119.md): Turbine Wheel · failed · Dec 8, 1998 · N63851 · Piper PA23250 · Exhaust Turbocharger > TURBO REMOVED AND INSPECTED. FOUND SHAFT BROKEN BETWEEN TURBINE AND COMPRESSOR BLADES. TURBINE BLADES WERE NOT FOUND ON THE SHAFT THAT TURBINE BLADES WERE ON. TURBINE BLADES WERE EXHAUSTED OUT THE AIRCRAFT THROUGH TAILPIPE. COMPRESSOR WHEELS HAD SIGNS OF B - [SDR CA980325015](https://openairdocs.org/sdr/CA980325015.md): Rod End · loose · Mar 10, 1998 · Piper PA23250 · Trailing Edge Flap Actuator > (CAN) ACTUATOR ROD END FELL OFF DURING APPROACH CAUSING THE FLAPS TO RETRACT. LANDING COMPLETED WITHOUT INCIDENT. DAMAGE INCLUDED BREAKING P/N 17320-00 BLOCK AND SLIGHT DAMAGE TO THE THREADS ON P/N 1736-00.ALL PARTS REPLACED AND AIRCRAFT RETURNED TO SERVICE. - [SDR 97ZZZX1710](https://openairdocs.org/sdr/97ZZZX1710.md): Retain Ring · dislodged · Apr 2, 1997 · N54830 · Piper PA23250 · Exhaust Turbocharger > EXTERNAL RETAINING RING THAT HOLDS THE TURBO SCAVENGE PUMP DRIVEN GEAR IN PLACE DISLODGED ALLOWING GEAR TO DISENGAGE WITH SUBSEQUENT PUMP FAILURE. WITH SCAVENGE PUMP INOPERABLE, OIL WAS FORCED BY TURBO SEAL AT A RAPID RATE AND BURNED IN THE EXHAUST UNNOTICED - [SDR 97ZZZX1946](https://openairdocs.org/sdr/97ZZZX1946.md): Pump · leak · Apr 2, 1997 · N27FM · Piper PA23250 · Engine Fuel Pump > PUMP LEAKAGE AT SEAM CASE TO PUMP. PUMP LEAKAGE OCCURRED AT TAKEOFF. SPRAYED FUEL DIRECTLY ON HOT TURBOCHARGER CAUSING FIRE IN ENGINE COMPARTMENT. APPEARED TO LEAK AT GASKET FLANGE. - [SDR CA961216039](https://openairdocs.org/sdr/CA961216039.md): Valve Stem · dislodged · Dec 4, 1996 · Piper PA23250 · Propeller Assembly > (CAN) PILOT REPORTED PROP RPM FLUCTUATIONS ON PREVIOUS FLIGHT. ON NEXT FLIGHT REPORTED NO PROP CONTROL WITH PROP LEVER. PILOT ABORTED FLIGHT. INSPECTION FOUND BOTH VALVE STEM AND DUST COVER LYING INSIDE THE PROP SPINNER DOME COVER, PROPELLER ACCUMULATOR PRESSU - [SDR AU960925](https://openairdocs.org/sdr/AU960925.md): Bearing · seized · Jun 17, 1996 · Piper PA23250 · Reciprocating Engine Power Section > (AUS) ENGINE NO1 MAIN BEARING SEIZED TO CRANKSHAFT DURING START - ENGINE HAD DONE 17.5 HOURS SINCE A TOP OVERHAUL WAS CARRIED OUT - [SDR 96ZZZX3757](https://openairdocs.org/sdr/96ZZZX3757.md): Magneto · failed · Mar 18, 1996 · N123CF · Piper PA23250 · Magneto/Distributor > MAGNETO WAS FOUND WITH DRIVE NUT HAVING NO THREADS AND NO THREADS ON DRIVE. - [SDR 95ZZZX1974](https://openairdocs.org/sdr/95ZZZX1974.md): Gerotor · seized · Mar 28, 1995 · N54748 · Piper PA23250 · Reciprocating Engine Oil System > TURBO SCAVANGE PUMP FAILED. APPEARS THAT THE ROTOR CRACKED WHICH, IN TURN, SHEARED AN ANTI-ROTATION PIN IN THE PUMP HOUSING IN WHICH THE GEROTOR TURNS. THE HOUSINGS WERE DAMAGED BY THIS PUMP HOUSING SPINNING, THE TURBO WAS NOT SCAVANGED WITH OIL LEADING TO T ## 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 = 'TIO540C1A' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/engine/lycoming-tio-540-c1a/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.