# SDR WRLA20110303473

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 3, 2011
- Submitted: March 3, 2011
- Operation: Air carrier
- Aircraft: N740WA
- Make and model: Boeing 747-4H6
- Registry model: [Boeing 747-4H6](https://openairdocs.org/model/boeing-747-4h6) (OpenAirDocs)
- Aircraft serial: 25700
- Aircraft time: 70,337 hours, 9,287 cycles
- Engine: Pwa PW4056
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Warning
- Condition: Activated
- Location: Nr 4 Engine
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/WRLA20110303473

## Discrepancy

CREW REPORTED A NR 4 FIRE INDICATION INFLT AND SHUT THE ENGINE DOWN.  THE NR 4 ENG A-LOOP IS CURRENTLY ON DMI FOR BEING INTERMITTENT.  MX IS OPENING THE ENGINE TO CHECK THE WIRING AND FIRE DETECTORS.

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