# Service difficulty reports: Lycoming IO-540-D4A5 A list on [Lycoming IO-540-D4A5](https://openairdocs.org/engine/lycoming-io-540-d4a5.md). Newest first. General aviation reporting is voluntary. - [SDR 2023FA0000413](https://openairdocs.org/sdr/2023FA0000413.md): Stabilator · unknown · Aug 14, 2023 · N503JA · Piper PA24260 · Elevator Control System > ON TUESDAY AUGUST 8TH AT APPROXIMATELY 2:45 PST N503JA TOOK OFF FROM KFUL ON RUNWAY 24. APPROX. 8 MIN INTO THE FLIGHT THE AIRCRAFT WAS LEVELED OFF AND TRAVELING AT APPROX. 150KTS. THE PILOT REPORTED THE AT THAT APPROX. 8 MIN MARK AFTER TAKING OFF THE AIRCRAFT - [SDR CA190425038](https://openairdocs.org/sdr/CA190425038.md): Efis · defective · Apr 13, 2019 · Navigation System > (CAN) AFTER TAKEOFF TERMINAL XXXX RADIOED THAT TRANSPONDER SIGNAL WAS LOST AND TO RECYCLE TRANSPONDER. TRANSPONDER SELECTION MADE THROUGH PRIMARY EFIS (DYNON D1000) WAS NOT WORKING AS ENTERING THE ASSIGNED TRANSPONDER CODE FAILED. PUSHING THE THIRD BUTTON (#2) - [SDR CA140715013](https://openairdocs.org/sdr/CA140715013.md): Fuel Line · wrong part · Jul 13, 2014 · Piper PA24260 · Fuel Controlling System > (CAN) AD 2011-26-04 FUEL INJECTION LINES, AND CLAMPING VISUALLY INSPECTED I.A.W. TEXTRON LYCOMING MOB NO. 342G DATED JULY 16, 2013 AS REQUIRED. FOUND FUEL STAINING FORWARD OF #6 FUEL INJECTION NOZZLE ON THE COOLING FINS OF CYLINDER NR 4. DETAIL VISUAL OF NR 6 - [SDR 2014FA0000257](https://openairdocs.org/sdr/2014FA0000257.md): Pump · pressure loss · Mar 1, 2014 · N9081P · Piper PA24260 · Fuel Boost Pump > PILOT REPORTED DURING FLIGHT, THE ACFT ENGINE SHUTDOWN DUE TO FUEL STARVATION. SWITCHED TO ALTERNATE TANKS BUT COULD NOT GET THE ENGINE TO RESTART. DECLARED AN EMERGENCY AND SAFELY LANDED WITH NO ISSUES. ATTEMPTED A RESTART AND FOUND THAT THE ELECTRIC BOO - [SDR CA120420009](https://openairdocs.org/sdr/CA120420009.md): Stringer · cracked · Apr 20, 2012 · Piper PA24260 · Fuselage Main, Longeron/Stringer > (CAN) DURING INSPECTION FOUND FUSELAGE RT STR 23743-05 AND LT FUSELAGE STR 23743-04 CRACKED AT THE FORWARD ENDS BELOW THE FORWARD WING ATTACH FITTINGS. - [SDR CA091119006](https://openairdocs.org/sdr/CA091119006.md): Housing · broken · Nov 19, 2009 · Piper PA24260 · Magneto/Distributor > (CAN) ENG WAS RECEIVED FOR PROP STRIKE INSP. MAG WAS INSPECTED AND 4 OUT OF THE 5 HSG SCREWS WERE MISSING. MAG WAS DISASSEMBLED AND ONE OF 3 ALIGNMENT TABS IN THE DISTRIBUTOR HSG WAS BROKEN OFF. THIS CAUSED HSGS TO SHUFFLE AND LOOSEN SCREWS. SPOT WHERE THE - [SDR 2009FA0000805](https://openairdocs.org/sdr/2009FA0000805.md): Door · separated · Sep 26, 2009 · N78MU · Amtr RV10 · Passenger/Crew Doors > PASSENGER DOOR NOT LATCHED AT AFT PIN PRIOR TO TAKEOFF. SOON AFTER ROTATION DOOR OPENED AND THEN SEPARATED FROM ACFT AT HINGE CONNECTION ON DOOR. DOOR DID NOT CONTACT ACFT AND FELL TO SIDE OF RUNWAY WITH MINOR DAMAGE. PILOT CONTINUED CLIMB AND ENTERED PATTE - [SDR CA051110003](https://openairdocs.org/sdr/CA051110003.md): Lug · failed · Nov 10, 2005 · Found FBA2C · Wheel/Ski/Float > (CAN) DURING WALK-AROUND, LT REAR FLOAT FLY-WIRE WAS FOUND LOOSE. FURTHER INSPECTION REVEALED THE LT, AFT FLY-WIRE ATTACH LUG HAD FAILED APPROX 1/4 INCH FROM THE REAR FUSELAGE ATTACH POINT. REMAINING 3 FLY-WIRE ATTACH LUGS INSPECTED, NO FAULT FOUND. BROKEN SEC - [SDR CA050920008](https://openairdocs.org/sdr/CA050920008.md): Cylinder Bore · damaged · Aug 9, 2005 · Found FBA2C · Reciprocating Engine Cylinder Section > (CAN) PILOT NOTICED INCREASED CHT IN FLIGHT UTILIZING GEM (GRAPHIC ENGINE MONITOR) ON NR 4 CYLINDER AND RICHEN UP MIXTURE TO MAINTAIN COOLER CHT. MAINTENANCE PERSONNEL DISCOVERED 0/80 DURING COMPRESSION TEST AND REMOVED AFFECTED CYLINDER ONLY TO FIND THAT 408 - [SDR 2005FA0000618](https://openairdocs.org/sdr/2005FA0000618.md): Seal · failed · Apr 25, 2005 · N9241P · Piper PA24260 · Reciprocating Engine Oil System > UPON TRYING TO INSTALL THE SOLID OIL SEAL OVER THE CRANKSHAFT FLANGE, THE SEAL FAILED AND TOTALLY SEPERATED IN A STRAIGHT LINE 90 DEGREES TO THE FACE OF THE SEAL. VERY LITTLE FORCE WAS BEING APPLIED TO THE INSTALLING TOOL WHEN THE SEAL FAILED. THIS WAS SECON - [SDR CA040623001](https://openairdocs.org/sdr/CA040623001.md): Nut · loose · Jun 21, 2004 · Found FBA2C · Fasteners > (CAN) DURING A ROUTINE INSPECTION THE JAM NUTS THAT SECURE THE PROP CONTROL CABLE TO AN ATTACHMENT BRACKET AT THE PROP GOVERNOR WERE FOUND LOOSE. THE LOWER JAM NUT HAD BACKED OFF COMPLETELY AND THE CABLE WAS FREE TO MOVE, BUT IN ONE DIRECTION ONLY. THE CONTRO - [SDR CA040426008](https://openairdocs.org/sdr/CA040426008.md): Release Pin · worn · Apr 26, 2004 · Piper PA24260 · Landing Gear Door Retract Section > (CAN) ON ANNUAL INSPECTION, WAS UNABLE TO RELEASE DOOR FOR EMERGENCY GEAR EXTENSION. PIN WAS FOUND WORN, AND RETURNED TO MFG FOR REPAIR. PIN REINSTALLED AND PROBLEM REPEATED, INVESTIGATION REVEALED NOSE DOOR SYSTEM WAS RIGGED TOO TIGHT. REPEATED CALLS TO MANUF - [SDR 20000825SH012](https://openairdocs.org/sdr/20000825SH012.md): Shaft · sheared · Aug 25, 2000 · N5788 · Fuel Boost Pump > THE ELECTRIC FUEL PUMP WOULD RUN, BUT WOULD NOT PUMP FUEL. DURING DISASSEMBLY, FOUND ONE OF THE FOUR VANES MISSING, THE VANE HOUSING TO SHAFT RETAINING PIN HAD COME OUT, AND THE SHAFT HAD SHEARED. THE CONCERN IS THAT THERE IS NO FILTER OR SCREEN BETWEEN THE E - [SDR 97ZZZX2662](https://openairdocs.org/sdr/97ZZZX2662.md): Servo · seal leak · May 26, 1997 · N991K · Piper PA24260 · Fuel Control/Reciprocating Engines > ENGINE ROUGHNESS DUE TO EXCESS RIGH MIXTURE. FOUND RECENT OVERHAULED SERVO TO BE AT FAULT DUE TO SEAL LEAKING FUEL INTO AIR CHAMBER. SERVO TSO SERVICE 30 HOURS. SEAL, S/N 2539561. - [SDR 97ZZZX3794](https://openairdocs.org/sdr/97ZZZX3794.md): Seal · leak · May 26, 1997 · N991K · Piper PA24260 · Fuel Control/Reciprocating Engines > SERVO WAS OVERHAULED ON APPROXIMATELY 1-28-97. COMPONENT OPERATED WITHOUT PROBLEM UNTIL 5-11-97 WHEN IT HAD ACCUMULATED 30 HOURS IN SERVICE. ON 5-11-97, EXPERIENCED IN-FLIGHT ENGINE ROUGHNESS WHICH ABATED SOMEWHAT WITH EXCESSIVELY LEANING OF THE MIXTURE. UP - [SDR 97ZZZX885](https://openairdocs.org/sdr/97ZZZX885.md): Camshaft · broken · Feb 2, 1997 · N1424N · Piper PA24260 · Reciprocating Engine Power Section > ENGINE OVERSPED IN CRUISE FLIGHT AT 6,500 FEET. MAXIMUM OVERSPEED WITNESSED WAS 3,500 RPM. AIRCRAFT LANDED AT FIRST SUITABLE AIRFIELD. ON INSPECTION, CAMSHAFT WAS FOUND BROKEN IN TWO BETWEEN FORWARD BEARING AND GOVERNOR DRIVE GEAR CAUSING PROPELLER TO DECRE - [SDR 95ZZZX3528](https://openairdocs.org/sdr/95ZZZX3528.md): Pump · dauber fod · Jul 5, 1995 · N9155P · Piper PA24260 · Fuel Control/Reciprocating Engines > ON 100-HOUR INSPECTION, DISCOVERED LARGE MUDDAUBERS' NESTS IN THE INLET TO THE FUEL INJECTION PUMP. THIS WEBCO KIT WAS INSTALLED IN RESPONSE TO AN AD NOTE FOR AN ALTERNATE ENGINE INLET AIR SOURCE. (CARBURETOR HEAT BOX TYPE DEVICE). THIS AREA IS AFTER THE AI ## 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 = 'IO540D4A5' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/engine/lycoming-io-540-d4a5/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.