# SDR AALA20110818DFW07

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 17, 2011
- Submitted: August 19, 2011
- Operation: Air carrier
- Aircraft: [N778AN](https://openairdocs.org/aircraft/N778AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 29587
- Aircraft time: 51,072 hours, 6,418 cycles
- System (JASC): [2621 · Fire Bottle, Fixed](https://openairdocs.org/jasc/2621)
- Part: Fire Bottle
- Condition: Discharged
- Location: Apu Bay
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20110818DFW07

## Discrepancy

APU FIRE EXTINGUISHING BOTTLE DISCHARGED WHEN PERFORMING PRESSURE SWITCH OPERATIONAL TEST.  REPLACED AUXILIARY POWER UNIT FIRE EXTINGUISHING BOTTLE.

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