# SDR 9709796304

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 15, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N664US
- Make and model: Boeing 747451
- Aircraft serial: 23819
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Det Card
- Part number: 89873202
- Condition: Failed
- Location: E/E Compt
- Part time: 25,753 hours
- Stage of operation: TX
- Nature of condition: N
- Precautionary procedure: F
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9709796304

## Discrepancy

DURING TAXI, AN APU FIRE INDICATION APPEARED ON EICAS.  APU FIRE BOTTLE DISCHARGED AND AIRCRAFT RETURNED TO THE GATE.  REPLACED FIRE DETECTOR CARD A-23 FOR LOOP-B, OPERATIONAL CHECK GOOD.

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