# Service difficulty reports: Lycoming O-540-A1D5

A list on [Lycoming O-540-A1D5](https://openairdocs.org/engine/lycoming-o-540-a1d5.md).

Newest first. General aviation reporting is voluntary.

- [SDR CA160304006](https://openairdocs.org/sdr/CA160304006.md): Carburetor · contaminated · Mar 3, 2016 · Piper PA24250 · Fuel Control/Reciprocating Engines
  > (CAN) CARBURETOR WAS TESTED WITH NO FAULTS WERE FOUND. THE FUEL LEVEL IN THE FLOAT BOWL WAS NORMAL WITH NO LEAKS. SOME MATERIAL WAS FOUND IN THE INLET SCREEN BUT DOESNÏ¿½T APPEAR TO HAVE GOT INTO THE CARB. WHEN THE CARB WAS DISASSEMBLED AND INSPECTED A VERY SM
- [SDR CA160229007](https://openairdocs.org/sdr/CA160229007.md): Carburetor · failed · Feb 24, 2016 · Piper PA24250 · Fuel Control/Reciprocating Engines
  > (CAN) ON APPROACH, THE PILOT REDUCED POWER WHILE TURNING BASE AND NOTICED THE ENGINE STARTED TO RUN ROUGH, SHE CONTINUED THE APPROACH AND UPON LANDING NOTICED THAT THE ENGINE HAD ACTUALLY QUIT AFTER TOUCHDOWN. AFTER SOME TRYING, SHE MANAGED TO GET IT RESTARTED
- [SDR CA160114002](https://openairdocs.org/sdr/CA160114002.md): Contact · deformed · Nov 30, 2015 · Piper PA23250 · Magneto/Distributor
  > (CAN) LEFT ENGINE WOULD NOT START. TROUBLESHOOTING REVEALED WEAK OCCASIONAL SPARK TO SPARK PLUGS FROM LT MAGNETO. INSPECTION OF MAGNETO REVEALED RETARD CONTACT ASSEMBLY FAULTY. 1 OF THE 2 CONTACTS HAS SEPARATED FROM ITS ARM AND WAS LODGED AGAINST THE OTHER C
- [SDR 2011FA0000491](https://openairdocs.org/sdr/2011FA0000491.md): Valve Seat · damaged · Jul 21, 2011 · N7984P · Piper PA24250 · Propeller Governor
  > ACFT OWNER STATED; PROP DOES NOT WORK CORRECTLY AND WITH ENGINE OVERSPEED, PROP AND GOVERNOR INSTALLED NEW 1-15-98. BENCH CHECK GOVERNOR, FOUND ONLY 80 LBS PRESSURE, NEEDS 290. REMOVE RELIEF VALVE AND FOUND THE VALVE SEAT PN A-20572 SMASHED AND IN 3 PIECES.
- [SDR CA091109003](https://openairdocs.org/sdr/CA091109003.md): Structure · cracked · Nov 9, 2009 · Piper PA24250 · Stabilizer Control System
  > (CAN) AN INSP WAS CARRIED OUT ON THE STABILATOR HORN DUE TO REPORTS OF CRACKING ON OTHER ACFT. NO CRACKS WERE VISIBLE FROM THE OUTSIDE, AND IT WAS NECESSARY TO REMOVE STABILATOR TORQUE TUBE PN20203-02 FROM HORN IN ORDER TO CHECK FOR CRACKS INSIDE HORN. THIS
- [SDR CA091117001](https://openairdocs.org/sdr/CA091117001.md): Conduit · worn · Nov 8, 2009 · Piper PA24250 · Main Landing Gear
  > (CAN) RT MAIN RETACTION PUSH PULL CONDUIT AT LANDING GEAR END WAS WORN BETWEEN INNER AND OUTER SLEEVES. SEPARATION OF THE SLEEVES DID NOT ALLOW THE GEAR TO EXTEND FULLY DOWN AND CAUSED ACFT TO VEER ONE WAY UPON LANDING.
- [SDR 2007FA0000627](https://openairdocs.org/sdr/2007FA0000627.md): Conduit · separated · Jun 6, 2007 · N7178P · Piper PA24250 · Landing Gear Retraction/Extension System
  > RT MLG EXTEND/RETRACT CONDUIT PUSH-PULL TUBING SEPARATED AT THE SWEDGE CONNECTION JUST OB OF THE LANDING GEAR CONTROL SUPPORT BRACKET. THERE WERE NO INDICATIONS OF IMPROPER INSTALLATION. (K)
- [SDR AU510002132](https://openairdocs.org/sdr/AU510002132.md): Rivet · missing · Dec 12, 2005 · Piper PA24250 · Wing Spar
  > WING REAR SPAR ATTACHMENT PLATE RIVETS (7OFF) MISSING. INVESTIGATION CONTINUING.
- [SDR AU510002000](https://openairdocs.org/sdr/AU510002000.md): Cylinder · cracked · May 10, 2005 · Gippld GA200 · Reciprocating Engine Cylinder Section
  > ENGINE CYLINDERS (2OFF) CRACKED IN CYLINDER HEAD AREA.
- [SDR CA050506005](https://openairdocs.org/sdr/CA050506005.md): Push-Pull Cable · broken · Apr 22, 2005 · Piper PA24250 · Landing Gear Retraction/Extension System
  > (CAN) AFTER EMERGENCY GEAR EXTENSION IN FLIGHT AND UNEVENTFUL LANDINGS. UNDER CARRIAGE COLLAPSED ON SUBSEQUENT TAXI. GEAR WAS EXTENDED, PUT ON JACKS LT MAIN UNDER CARRIAGE WAS INOPERATIVE. UPON INVESTIGATION GEAR PUSH PULL CABLE WAS FOUND BROKEN.
- [SDR 2004FA0000065](https://openairdocs.org/sdr/2004FA0000065.md): Control Cable · misrouted · Dec 4, 2003 · N7369P · Piper PA24250 · Mixture Control
  > MIXTURE CONTROL CABLE SECURED AND/OR ROUTED INCORRECTLY WHEN MIXTURE CONTROL CABLE WAS REPLACED AND/OR LUBED. WHEN THE CABLE CAME IN CONTACT WITH NOSE GEAR EXTENSION DURING FINAL APPROACH TO RUNWAY. THE NOSE GEAR ASSEMBLY CAUGHT THE MIXTURE CONTROL CABLE SOM
- [SDR AUS20030697](https://openairdocs.org/sdr/AUS20030697.md): Piston · cracked · Jun 16, 2003 · Piper PA23250 · Reciprocating Engine Cylinder Section
  > (AUS) PISTON CRACKED THROUGH OIL RING LAND.
- [SDR AUS20020942](https://openairdocs.org/sdr/AUS20020942.md): Bolt · loose · Jul 22, 2002 · Piper PA25235 · Reciprocating Engine Power Section
  > (AUS) ENGINE CRANKSHAFT GEAR RETAINING BOLT LOOSE. THE BOLT HEAD WASWORN DOWN FROM RUBBING ON THE INSIDE OF THE OIL PUMP DRIVESHAFT.THE CRANKSHAFT GEAR ROTATED ON THE BOLT, SHEARING THE DRIVE DOWEL AND GEAR TEETH. THE LH MAGNETO DRIVE GEAR DAMAGED IN AREA WHER
- [SDR AUS20011117](https://openairdocs.org/sdr/AUS20011117.md): Gear · failed · Sep 25, 2001 · Gippld GA200 · Magneto/Distributor
  > (AUS) MAGNETO TIMING GEAR DRIVESHAFT FAILED.
- [SDR AUS20010579](https://openairdocs.org/sdr/AUS20010579.md): Distributor · faulty · Jun 4, 2001 · Piper PA24250 · Magneto/Distributor
  > (AUS) MAGNETO DISTRIBUTOR BLOCK CENTRAL BUSH LOOSE ALLOWING THE DISTRIBUTOR GEAR TO PARTIALLY DISENGAGE AND SHEAR THE TEETH.
- [SDR 2002FA0000043](https://openairdocs.org/sdr/2002FA0000043.md): Engine · failed · Apr 18, 2001 · N280GA · Gippld GA200 · Engine (Reciprocating)
  > ENGINE ACTED AS THOUGH CARBURETOR ICE WAS BEING CLEARED WITH CARBURETOR HEAT ON. LANDED UNEVENTFULLY. AT TOUCHDOWN, COULD HEAR A LOUD SQUEAK. AT ENGINE SHUT DOWN, ENGINE STOPPED AS THOUGH A BRAKE WAS APPLIED. PROP WAS DIFFICULT TO TURN BY HAND. ALUMINUM A
- [SDR CA001020012](https://openairdocs.org/sdr/CA001020012.md): Switch · broken · Aug 30, 2000 · Piper PA24250 · Magneto/Distributor
  > (CAN) PILOT PHONE A.M.E., SAYS HE HAS NO MAG DROP ON ONE MAG. ASKED IF HE DID A LIVE/DEAD MAGS CHECK AT LAST SHUTDOWN, HE SAID HE FORGOT EVEN AFTER HE WAS REMINDED TO DO SO ON PREVIOUS OCCASION. BROKEN WIRE AT TERMINAL ON MAGNETO RIGHT. REPLACED TERMINAL.
- [SDR CA990715019](https://openairdocs.org/sdr/CA990715019.md): Exhaust Stack · separated · Jul 5, 1999 · Piper PA24250 · Engine Collector/Tailpipe/Nozzle
  > (CAN) EXHAUST STACK TOTALLY SEPARATED INSIDE CARBURETOR HEAT SHROUD. VISIBLE SIGNS OF PROLONGED FAILURE.
- [SDR CA990715020](https://openairdocs.org/sdr/CA990715020.md): Alternator · loose · Jul 5, 1999 · Piper PA24250 · AC Generator-Alternator
  > (CAN) ALTERNATOR BRACKET NOT CERTIFIED FOR AVIATION APPLICATION (BOGUS PARTS). ALTERNATOR INSTALLED 55 AMP. SPECS CALL FOR 70 AMP. FORWARDED TO M&M FOR CORRECTIVE ACTION.
- [SDR AU990430039](https://openairdocs.org/sdr/AU990430039.md): Bearing · corroded · Apr 23, 1999 · Piper PA24250 · Propeller Blade Section
  > (AU) PROPELLER RECEIVED FOR CORROSION INSPECTION. THE PROPELLER BLADE BEARINGS WERE FOUND CORRODED.
- [SDR 99ZZZX1014](https://openairdocs.org/sdr/99ZZZX1014.md): Pump · failed · Feb 5, 1999 · N5374Y · Piper PA23250 · Engine Fuel Pump
  > ARM ON FUEL PUMP FAILED IN LESS THAN 2 MINUTES OF OPERATION. 'BROKE THROUGH PIVOT HOLE IN ARM DROPPED INTO ACCESSORY CASE'. INFO LETTER FROM REPAIR STATION STATED THEY FELT PUMP WAS IMPROPERLY INSTALLED BASED ON SEVERITY OF FRACTURE AND MARKS ON ARM. STATED
- [SDR AU981554](https://openairdocs.org/sdr/AU981554.md): Bearing · failed · Nov 24, 1998 · Piper PA25235 · Magneto/Distributor
  > (AUS) LEFT MAGNETO BEARING FAILED. METAL CONTAMINATION OF ENGINE OIL SYSTEM.
- [SDR AU981293](https://openairdocs.org/sdr/AU981293.md): Engine · failed · Oct 5, 1998 · Engine (Reciprocating)
  > (AUS) ENGINE FAILED. INVESTIGATION FOUND OIL FILTER CONTAMINATED WITH METAL PARTICLES.
- [SDR CA980623003](https://openairdocs.org/sdr/CA980623003.md): Blade · corroded · Jun 5, 1998 · Piper PA24250 · Propeller Blade Section
  > (CAN) PROPELLER RECEIVED FOR CORROSION INSPECTION AND COMPLIANCE WITH AD 97-18-02. INSPECTION FOUND ONE BLADE; ONE CLAMP AND TWO BLADE BEARINGS WERE ALL UNSERVICEABLE.
- [SDR AU980504](https://openairdocs.org/sdr/AU980504.md): Impulse Coupling · failed · May 4, 1998 · Magneto/Distributor
  > (AUS) MAGNETO IMPULSE COUPLING PAWL RETAINING RIVETS LOOSE AND CLOSE TO FAILURE.
- [SDR AU980503](https://openairdocs.org/sdr/AU980503.md): Impulse Coupling · failed · Apr 6, 1998 · Magneto/Distributor
  > (AUS) MAGNETO IMPULSE COUPLING PAWL RIVETS LOOSE AND CLOSE TO FAILURE. MAGNETO DRIVE SUPPORT BEARING CAGE BREAKING UP. METAL FOUND IN OIL FILTER.
- [SDR AU960607](https://openairdocs.org/sdr/AU960607.md): Stud · cracked · Apr 29, 1996 · Piper PA24250 · Main Landing Gear Attach Section
  > (AUS) MAIN LANDING GEAR SIDE BRACE STUD CRACKED - FOUND DURING MAGNETIC PARTICLE INSPECTION IAW AD/PA24/44
- [SDR 95ZZZX589](https://openairdocs.org/sdr/95ZZZX589.md): Distributor Blk · failed · Jan 19, 1995 · N6917P · Piper PA24250 · Magneto/Distributor
  > CENTER BUSHING IN THE DISTRIBUTOR BLOCK CAME LOOSE WHERE IT WAS CAST INTO THE BLOCK MATERIAL ALLOWING DISTRIBUTOR GEAR TO SHIFT AWAY FROM THE DRIVE GEAR CAUSING MAG TO FIRE OUT OF TIME (CROSS-FIRE TYPE OF CONDITION).

## 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 = 'O540A1D5'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/engine/lycoming-o-540-a1d5/reports

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