# SDR ABXA070342

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 12, 2007
- Submitted: October 17, 2007
- Operation: Air carrier
- Aircraft: N972AX
- Make and model: Doug DC-9-41
- Registry model: [Doug DC-9-41](https://openairdocs.org/model/douglas-dc-9-41) (OpenAirDocs)
- Aircraft serial: 47631
- Aircraft time: 56,789 hours, 69,160 cycles
- System (JASC): [2697 · Fire Protection System Wiring](https://openairdocs.org/jasc/2697)
- Part: Wire
- Condition: Disconnected
- Location: Fire Detection
- Stage of operation: DE
- How discovered: O
- Nature of condition: N
- Precautionary procedure: F
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ABXA070342

## Discrepancy

DURING DESCENT INTO ILN, APU FIRE INDICATION.  APU WAS NOT OPERATING AT THE TIME.  COMPLETED APU FIRE EMERGENCY CHECKLIST INCLUDING DISCHARGE OF FIRE BOTTLES.  LIGHT WENT OUT AFTER APPROX 3 MINUTES.  LIGHT RE-ILLUMINATED APPROX 5 MINUTES LATER FOR APPROX 30 SECONDS.  FOUND WIRE PULLED OUT OF PLUG P1-278.  REPLACED PLUG P1-278, TESTED FIRE LOOP SYSTEM PER DC9 MM 26-10-02-2 WITH APU RUNNING AND WITH APU SHUT OFF.  NO DEFECTS NOTED.

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