# SDR QXEA0101197

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2001
- Submitted: July 25, 2001
- Operation: Air carrier
- Aircraft: N494US
- Make and model: Fokker F.28 MK4000
- Registry model: [Fokker F.28 MK4000](https://openairdocs.org/model/fokker-f-28-mk4000) (OpenAirDocs)
- Aircraft serial: 11167
- Aircraft time: 38,621 hours, 47,614 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Loop
- Condition: Shorted
- Location: Apu
- Stage of operation: NR
- 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/QXEA0101197

## Discrepancy

SEA-APU FIRE WARNING. APU AUTO SHUT DOWN AND AGENT DISCHARGED. FOUND WE1-114 AND WE14-114 CONNECTION TO APU FIRE LOOP SHORTED. REPLACED. REPLACED BOTTLE.APU FIRE EXT SYS OPS CHECKS AS PER F-28 MM 26-13-01. PAGE 202, ITEM 2. AIRCRAFT RETURNED TO SERVICE.

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