# SDR CALA2024121201482

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 10, 2024
- Submitted: December 12, 2024
- Operation: Air carrier
- Aircraft: [N821UA](https://openairdocs.org/aircraft/N821UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 944
- Aircraft time: 79,270 hours, 34,451 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: AD321431
- Condition: No Test
- Location: Zone 200
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2024121201482

## Discrepancy

OPERATIONAL CHECK OF CABIN EMERGENCY LIGHTS {A3NB-33-3-6012} - FAILED TEST EPSU BATTERY FWD LEFT 33-51-38 REPLACED FWD LEFT EPSU BATTERY REF AMM 33-51-38-400-002-A, OPS CHECK OK.

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