# SDR CALA2025021902372

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 16, 2025
- Submitted: February 19, 2025
- Operation: Air carrier
- Aircraft: [N831UA](https://openairdocs.org/aircraft/N831UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1291
- Aircraft time: 74,313 hours, 32,798 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/CALA2025021902372

## Discrepancy

CABIN EMERGENCY LIGHTING BATTERY CAPACITY OPERATIONAL CHECK {A3NB-33-3-6013} - BATTERY TEST UNSATISFIED. EPSU LOCATED AT FWD L AND AFT L NEED REPLACEMENT UPDATED PART INFO. BATTERY NIS IN SEA NEEDS A NEW BATTERY PACK FORWARD L / H SIDE.  P / N : AD3214-31. S / N : 379637 INSTALLED.   AFT L / H SIDE P / N : AD3214-31. S / N : 379643 INSTALLED. REMOVED AND REPLACED FORWARD LEFT AND AFT LEFT EMERGENCY LIGHTING BATTERY PACKS IAW AIRBUS A319 A.M.M. TASK 33-51-38-000-002-A0 REMOVAL AND REPLACED BATTERY PACK AND TESTED IAW A.M.M. TASK 33-51-38-400-002-A0. EPSU SYSTEM OPS. CHECKS GOOD.PARTS USED:  18-3351-3-0001, QTY :1

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.