# SDR IPXA2015090693179

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 6, 2015
- Submitted: September 8, 2015
- Operation: Air carrier
- Aircraft: [N258UP](https://openairdocs.org/aircraft/N258UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48416
- Aircraft time: 72,035 hours, 13,871 cycles
- System (JASC): [2610 · Detection System](https://openairdocs.org/jasc/2610)
- Part: Control Unit
- Part number: 80380303
- Part serial: 932
- Condition: Intermittent
- Location: Fire Detection
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2015090693179

## Discrepancy

DURING CLIMBOUT, RECEIVED LEVEL 1 MESSAGE "FIRE DET 1 FAIL".  R & R WITH NEW FDCU, ELEMENT RESPONDER,  HARNESS WIRE ASSY AND THEN ON GROUND NR 1 ENGINE FDCU BITE TEST PASSED IAW AMM 26-11-03/401, 26-11-02/401, 71-50-04/401 AND 26-11-02/501.

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