# SDR 2007UALA03230

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 2007
- Submitted: August 21, 2007
- Operation: Air carrier
- Aircraft: [N222UA](https://openairdocs.org/aircraft/N222UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30553
- Aircraft time: 24,505 hours, 3,187 cycles
- Engine: Pwa PW4090
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Warning
- Condition: Illuminated
- Location: Apu
- Stage of operation: TX
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: F
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007UALA03230

## Discrepancy

DURING PUSH-BACK, CREW HAD AN APU FIRE WARNING INDICATION.   08-31-07    REPLACED APU.  ALSO, ACCOMPLISHED APU FIRE EXTINQUISHUNG BOTTLE REPLACEMENT PER MM 26-22-01-401.   SUSPECT INTERNAL APU FAILURE: SYMPTOMS CONSISTENT WITH  T1 BLADE FAILURE.

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