# SDR FFS2003F00019

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 2, 2003
- Submitted: June 11, 2003
- Operation: Air carrier
- Aircraft: [N3536B](https://openairdocs.org/aircraft/N3536B), registered now
- Make and model: Piper PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- Aircraft serial: 317952205
- Engine: Lyc TIO540J2BD
- System (JASC): [2820 · Aircraft Fuel Distribution System](https://openairdocs.org/jasc/2820)
- Part: Line
- Part number: 2319517
- Condition: Leaking
- Location: Lt Wing Fuel
- Part time: 21,559 hours
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FFS2003F00019

## Discrepancy

PILOT REPORTED LT FUEL BOOST PUMP CIRCUIT BREAKER POPPED IN FLIGHT.  UPON INSPECTION OF FUEL PUMP IN LT WING ROOT, IT WAS APPARENT THERE HAD BEEN A BRIEF FIRE IN THE AREA.  PLASTIC SPIRAL WRAP AROUND FUEL LINE HAD SHRUNK AND MELTED.  PNEUMATIC LINE TH LT WING DE-ICE BOOT WAS MELTED.  AREA WAS COVERED WITH SOOT.  WIRE TO LOW-PRESSURE BOOST PUMP HAD CHAFFED AGAINST THE FUEL LINE TO BOOST PUMP WARNING PRESSURE SWITCH.  THE WIRE ARCED A HOLE IN THE FUEL LINE CREATING A FUEL LEAK AND FIRE.  WHEN CIRCUIT BREAKER POPPED, BOOST PUMP FAILED AND REMOVED PRESSURE FROM LEAKING LINE.

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