# SDR CALA2025031302792

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 12, 2025
- Submitted: March 13, 2025
- Operation: Air carrier
- Aircraft: [N442UA](https://openairdocs.org/aircraft/N442UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 780
- Aircraft time: 78,909 hours, 33,092 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/CALA2025031302792

## Discrepancy

CABIN EMERGENCY LIGHTING BATTERY CAPACITY OPERATIONAL CHECK EPSU BATTERY 1L WAS UNSATISFACTORY EPSU BATTERY  REPLACED AS PER AMM 33-51-38-000-002-A AND INSTALLATION OF THE BATTERY OF THE EMERGENCY POWER SUPPLY UNIT (EPSU) A SPER AMM TASK 33-51-38-400-002-A0 TEST OK PARTS USED:  18-3351-3-0001,QTY :1

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