# SDR DL733001401

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 25, 2000
- Submitted: July 27, 2000
- Operation: Air carrier
- Aircraft: [N231DN](https://openairdocs.org/aircraft/N231DN), registered now
- Make and model: Boeing 737-3L9
- Registry model: [Boeing 737-3L9](https://openairdocs.org/model/boeing-737-3l9) (OpenAirDocs)
- Aircraft serial: 23717
- Aircraft time: 38,997 hours, 17,463 cycles
- Engine time: 33,251 hours, 23,092 cycles
- System (JASC): [2610 · Detection System](https://openairdocs.org/jasc/2610)
- Part: Module
- Condition: Faulty
- Location: Nr 2 Engine
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL733001401

## Discrepancy

UPON STARTING NR 2 ENG, GOT MASTER FIRE WARNING LIGHT AND HORN.  NO TEE HANDLES ILLUMINATED.  SHUT DOWN NR 2 ENG APU EGT WAS NORMAL.  ALL TEST OK.  RAN ENG, UNABLE TO DUPLICATE PROBLEM.  REPLACED FIRE WARNING CONTROL MODULE AS PRECAUTIONARY.  ALL TEST OK.

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