# SDR AALA202108086976

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 6, 2021
- Submitted: August 8, 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: 27,458 hours, 10,935 cycles
- System (JASC): [2621 · Fire Bottle, Fixed](https://openairdocs.org/jasc/2621)
- Part: Warning Light
- Condition: False Indication
- Location: Apu Extinguisher
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202108086976

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: APU AGENT DISCHARGE LIGHT ON OVERHEAD PANEL ILLUMINATED IN CRUISE AND WENT OUT ON LANDING. MAINTENANCE VERIFIED THAT THE BOTTLE HAD NOT DISCHARGED AND INDICATED GOOD. A SATISFACTORY OPERATIONAL CHECK OF THE APU FIRE TEST SYSTEM WAS ACCOMPLISHED WITH NO DEFECT NOTED PER AMM 26-13-00.

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