# SDR B30R20033018

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 25, 2003
- Submitted: November 4, 2003
- Operation: General aviation
- Aircraft: N26494
- Make and model: Cessna 550
- Registry model: [Cessna 550](https://openairdocs.org/model/cessna-550) (OpenAirDocs)
- Aircraft serial: 5500605
- Aircraft time: 8,671 hours
- System (JASC): [2897 · Fuel System Wiring](https://openairdocs.org/jasc/2897)
- Part: Wire
- Condition: Arced
- Location: Fuel Boost
- Stage of operation: IN
- How discovered: V
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/B30R20033018

## Discrepancy

IN TROUBLESHOOTING A SUBMERGED FUEL BOOST PUMP CIRCUIT BREAKER POPPING, MAINTENANCE TECHNICIANS DISCOVERED THE FUEL BOOST PUMP ELECTRICAL HARNESSES HAD CHAFED THROUGH THE BUNDLE INSULATION AND WAS ARCING ON ALUMINUM FUEL LINES P/N 6526355-37 INSIDE BOTH THE LEFT AND RIGHT WET WING. THE POTENTIAL FOR FUEL VAPOR IGNITION COULD HAVE CAUSED AN EXPLOSION.

---
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.