# SDR WRNA200300011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 21, 2003
- Submitted: May 23, 2003
- Operation: Air carrier
- Aircraft: [N311EA](https://openairdocs.org/aircraft/N311EA), registered now
- Make and model: Lkheed 10113851
- Aircraft serial: 193A1012
- Aircraft time: 58,488 hours, 25,887 cycles
- Engine: Rroyce RB21122B02
- Engine time: 38,367 hours, 13,735 cycles
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Pressure Switch
- Part number: 7476604
- Part serial: KG55913
- Condition: Leaking
- Location: Nr 3 Engine
- Part time: 1,974 hours, 595 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: E, J, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/WRNA200300011

## Discrepancy

DURING CLIMB/CRUISE FULL FIRE INDICATION ON ENG NR 3, LOOP A&B ON, FIRE HANDLE ON, FIRE BELL ON. ENGINE WAS SHUTDOWN, FIRE INDICATIONS OFF IMMEDIATELY AFTER ENGINE SHUTDOWN. FIRE BOTTLE NOT FIRED. APPROX 8800 GALS. OF FUEL DUMPED. A/C RETURNED TO FIELD, LANDED NORMAL.   REPOSITIONED V BAND COUPLING AT HP SEAL, NR 3 ENG. IAW 20-36-01. REMOVED AND REPLACED HP OVERPRESSURE SWITCH IAW 36-11-44. RAN ENGINE AT TAKE OFF POWER SEVERAL TIMES IAW 71-00-00 NO ABNORMALITIES NOTED, OP'S CHECKED NORMAL. AIRCRAFT RETURNED TO SERVICE.

---
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.