# SDR AALA202103209004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 19, 2021
- Submitted: March 22, 2021
- Operation: Air carrier
- Aircraft: [N128UW](https://openairdocs.org/aircraft/N128UW), registered now
- Make and model: Airbus A320-214
- Registry model: [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214) (OpenAirDocs)
- Aircraft serial: 4242
- Aircraft time: 30,090 hours, 16,283 cycles
- System (JASC): [2621 · Fire Bottle, Fixed](https://openairdocs.org/jasc/2621)
- Part: Extinguisher
- Part number: 336000053
- Part serial: 65332D1
- Condition: Discharged
- Location: Apu Bay
- Part time: 32,732 hours, 15,174 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202103209004

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: AUXILIARY POWER UNIT DISCHARGE LIGHT ON, ON OVERHEAD FIRE PANEL. REPLACED AUXILIARY POWER UNIT FIRE EXTINGUISHER BOTTLE AND CARTRIDGE PER AMM 26-22-41.

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