# Service difficulty reports: Lycoming O-540-B2C5 A list on [Lycoming O-540-B2C5](https://openairdocs.org/engine/lycoming-o-540-b2c5.md). Newest first. General aviation reporting is voluntary. - [SDR 2009FA0000456](https://openairdocs.org/sdr/2009FA0000456.md): Exhaust Pipe · cracked · Apr 18, 2009 · N200SX · Amtr PUSHER · Engine Collector/Tailpipe/Nozzle > WHILE FLYING PART OF THE EXHAUST PIPE ON THE PILOT SIDE SEPARATED FROM THE PLANE. THE BREAK OCCURRED AT THE WELD JOINT WHERE THE LAST HEADER JOINED THE MAIN PIPE. THIS EXHAUST SYS WAS A CUSTOM BUILT EXHAUST WITH NO SLIP JOINTS OR SUPPLEMENTAL SUPPORTS. THE - [SDR 2009FA0000457](https://openairdocs.org/sdr/2009FA0000457.md): Pressure Switch · intermittent · Apr 18, 2009 · N200SX · Amtr PUSHER · Landing Gear Retraction/Extension System > WHILE PERFORMING VARIOUS TEST FLIGHTS, PERFORMED SLOW FLIGHT AND EXTENDED LANDING GEAR. THE GEAR FAILED TO COMPLETELY EXTEND WITH ONLY THE PILOT SIDE MAIN GEAR SHOWING GREEN LIGHT. THE GEAR WAS CYCLED A COUPLE OF TIMES WITH NO IMPROVEMENT. COMPENSATING MANE - [SDR 2006FA0000478](https://openairdocs.org/sdr/2006FA0000478.md): Magneto · disintegrated · May 1, 2006 · N7339Z · Piper PA25235 · Magneto/Distributor > MAGNETO WAS REMOVED FROM ENGINE FOR ROUTINE MAINTENANCE INSPECTION. THREADS ON MAGNETO SHAFT AND NUT WERE COMPLETELY STRIPPED. SLOT IN SHAFT FOR WOODRUFF KEY WAS WALLOWED OUT. COTTER KEY WHICH RETAINED NUT TO SHAFT WAS STILL IN PLACE. AT TIME OF REMOVAL ENG - [SDR 2003FA0000695](https://openairdocs.org/sdr/2003FA0000695.md): Bearing Cage · disintegrated · May 31, 2003 · N9827P · Piper PA25235 · Magneto/Distributor > DURING MAINTENANCE ACTION, FOUND LT IMPULSE COUPLING MAG GEAR ROLLER BEARING CAGE, PN LYC 67542 DISINTEGRATED AND DEPOSITED IN OIL SUMP. BOTH SIDES OF ROLLER CAGE CAME LOOSE AND ROLLER BALLS BUNCHED UP INSIDE BEARING RACES. ADDITIONAL STRESS OF IMPULSE MAGNE - [SDR 2003FA0000696](https://openairdocs.org/sdr/2003FA0000696.md): Bearing Cage · disintegrated · May 31, 2003 · N9883P · Piper PA25235 · Magneto/Distributor > DURING MAINTENANCE ACTION, FOUND LT IMPULSE COUPLING MAG GEAR ROLLER BEARING CAGE, PN LYC 67452 DISINTEGRATED AND DEPOSITED IN OIL SUMP. BOTH SIDES OF ROLLER CAGE CAME LOOSE AND ROLLER BALLS BUNCHED UP INSIDE BEARING RACES. ADDITIONAL STRESS OF IMPULSE MAG - [SDR 2002FA0000079](https://openairdocs.org/sdr/2002FA0000079.md): Impulse Coupling · separated · Sep 30, 2001 · N8903L · Piper PA25235 · Magneto/Distributor > DURING GROUND RUN, OPERATOR NOTED A LOUD BANG AND SUDDEN OIL LEAKAGE. AFTER SHUT DOWN FOUND THAT LT MAGNETO CAME OFF THE ACCESSORY HOUSING, CAUSING OIL LEAK. BANG WAS CAUSED BY MAG HOUSING WHICH CAME APART AT UPPER ATTACHMENT AREA (ATACHMENT LUG). - [SDR CA990728042](https://openairdocs.org/sdr/CA990728042.md): Crankcase · worn · Jul 19, 1999 · Piper PA25235 · Reciprocating Engine Power Section > (CAN) WITH THE MAGS REMOVED, MAG DRIVE IDLER WAS FOUND LOOSE. IT WAS NOTED UPON REMOVAL THAT THE CAST BOSS IN THE AFT END OF THE LEFT CRANKCASE WAS FOUND WORN TO THE POINT THAT THE BEARING FAILED AND WAS MISSING. SUBMITTER SUGGESTED NOT TO RUN ENGINE PAST TB - [SDR AU971472](https://openairdocs.org/sdr/AU971472.md): Engine · failed · Nov 18, 1997 · Piper PA25235 · Engine (Reciprocating) > (AUS) ENGINE STOPPED. INITIAL INVESTIGATION FOUND THE LH MAGNETO DRIVE GEAR TO BE DAMAGED AND THE SUPPORT BEARING FAILED. ROTATING THE PROPELLER DID NOT CAUSE THE REAR CASE GEAR TRAIN TO OPERATE. - [SDR 97ZZZX1319](https://openairdocs.org/sdr/97ZZZX1319.md): Spring · broke · Mar 7, 1997 · N8677L · Piper PA25235 · Reciprocating Engine Cylinder Section > DURING ASSEMBLY OF THIS ENGINE, 6 SHROUD TUBE SPRINGS WERE INSTALLED, 3 BROKE WHEN THE NUT WAS TIGHTENED. THESE SPRINGS WERE SUPPLIED AS PART OF A PACKET SET FROM SUPERIOR AIR PARTS. - [SDR AU970109](https://openairdocs.org/sdr/AU970109.md): Dowel · sheared · Jan 29, 1997 · Piper PA25235 · Reciprocating Engine Power Section > (AUS) RH CRANKCASE NO3 DOWEL SHEARED ALLOWING MOVEMENT OF THE MAINBEARINGS - WEAR ALSO TO CRANKCASE TUNNEL AND SCORING OF THE CRANKCASE JOURNAL - DOWEL WAS SUPERCEDED (STEPPED) TYPE - [SDR AU970110](https://openairdocs.org/sdr/AU970110.md): Piston · cracked · Jan 29, 1997 · Piper PA25235 · Reciprocating Engine Cylinder Section > (AUS) NO1, NO3 AND NO5 PISTONS CRACKED IN AREA OF SKIRT OPPOSITE TO THE PISTON PIN BOSS - NO1, N3 AND NO5 INDUCTION TUBES FOUND LOOSE ALLOWING UNMETERED AIR INTO ENGINE CAUSING SUSPECTED LEAN MIXTURE - NO5 CYLINDER SPARK PLUGS IN POOR CONDITION - PISTONS ARE H - [SDR AU970112](https://openairdocs.org/sdr/AU970112.md): Nut · loose · Jan 29, 1997 · Piper PA25235 · Engine Oil Temperature Regulator > (AUS) THERMOSTATIC OIL COOLER BYPASS VALVE (VERNATHERM) NUT LOOSE - [SDR AU970114](https://openairdocs.org/sdr/AU970114.md): Tappet · spalled · Jan 29, 1997 · Piper PA25235 · Reciprocating Engine Power Section > (AUS) CAMSHAFT NO5 LOBE AND ASSOCIATED TAPPET BODIES (2OFF) SEVERELY SPALLED - [SDR 96ZZZX3888](https://openairdocs.org/sdr/96ZZZX3888.md): Bearing · failed · Jul 18, 1996 · Reciprocating Engine Power Section > AFTER NORMAL TEST CELL RUN, ENGINE OIL WAS DRAINED AND THE OIL FILTER AND SUCTION SCREEN WAS INSPECTED AND A MASSIVE AMOUNT OF ALUMINUM WAS FOUND. UPON DISASSEMBLY, FOUND THE FRONT BEARING HAD FAILED AT THE NR 2 JOURNAL. THE BEARING HAD SMEARED AND TRANSFERR - [SDR 96ZZZX4059](https://openairdocs.org/sdr/96ZZZX4059.md): Cam Follower · broken · Jul 16, 1996 · Reciprocating Engine Power Section > CAM FOLLOWERS BROKEN ON NR 1 CYLINDER EXHAUST NR 3, EXHAUST AND INTAKE, NR 5 CYLINDER-INTAKE. REST OF CAM FOLLOWERS PITTED OR SPALLED. NR 2 CYLINDER DROPPED THE EXHAUST VALVE. OIL SUMP REMOVED FOR INSPECTION AND CLEANING. FOUND PIECES OF CAM FOLLOWERS IN S - [SDR AU961102](https://openairdocs.org/sdr/AU961102.md): Fitting · cracked · Jun 23, 1996 · Piper PA25235 · Wing, Fuselage Attach Fittings > (AUS) LH AND RH WING FRONT SPARS CRACKED ON LOWER RADIUS OF FRONT AND REAR WING TO FUSELAGE ATTACHMENT LUGS ## 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 = 'O540B2C5' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/engine/lycoming-o-540-b2c5/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.