# SDR CALA2026040715132

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 6, 2026
- Submitted: April 7, 2026
- Operation: Air carrier
- Aircraft: [N850UA](https://openairdocs.org/aircraft/N850UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1653
- Aircraft time: 70,174 hours, 31,594 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/CALA2026040715132

## Discrepancy

CIDS EMERGENCY LIGHT SYSTEMS TEST FAILED. FAULT LIGHT EPSU BATTERY AFT L. 33-51-38 REPLACED EPSU BATTERY AFT L 13WL PER AMM 33-51-38-400-002-A. BITE TEST OP CHECKS GOOD.

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