# SDR AALA202102109004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 6, 2021
- Submitted: February 10, 2021
- Operation: Air carrier
- Aircraft: [N977UY](https://openairdocs.org/aircraft/N977UY), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5409
- Aircraft time: 26,341 hours, 10,477 cycles
- System (JASC): [2620 · Extinguishing System](https://openairdocs.org/jasc/2620)
- Part: Extinguisher
- Part number: 336000053
- Part serial: 78761D1
- Condition: Discharged
- Location: Zone 300 Apu
- Part time: 26,347 hours, 10,480 cycles
- Stage of operation: NR
- How discovered: V
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202102109004

## Discrepancy

AIRCRAFT WAS GROUNDED: APU AGENT DISCHARGE LIGHT ILLUMINATED WITH APU RUNNING. ACCOMPLISHED TSM 26-22-00-810-806-A. REMOVED AND REPLACED APU FIRE BOTTLE EXTING 11WF IAW AMM 26-22-41.

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