# SDR AALA2020032549004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 22, 2020
- Submitted: March 25, 2020
- Operation: Air carrier
- Aircraft: [N909AM](https://openairdocs.org/aircraft/N909AM), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7756
- Aircraft time: 8,752 hours, 3,295 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 321431
- Condition: Faulty
- Location: Cabin
- 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/AALA2020032549004

## Discrepancy

AIRCRAFT NOT GROUNDED - EMERGENCY POWER SUPPY UNIT (EPSU) TEST FAULTED BATTERY 15WL. REPLACED POSITION 15WL BATTERY, PERFORMED RETEST AND OPERATIONAL CHECK GOOD PER AMM 33-51-38.

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