# SDR CALA2025110310840

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 30, 2025
- Submitted: November 3, 2025
- Operation: Air carrier
- Aircraft: [N822UA](https://openairdocs.org/aircraft/N822UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 948
- Aircraft time: 81,077 hours, 35,596 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Light
- Condition: Inoperative
- 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/CALA2025110310840

## Discrepancy

EPSU BATTERY AFT LIGHT MESSAGE POPULATED WHEN PERFORMING EMERGENCY LIGHT TEST VIA PTP. NO SYS OK.   REMOVED AND REPLACED EPSU BATTERY AFT LIGHT PER PTP IAW AMM 33-51-38-000-002-A AND 33-51-38-400-002-A . PERFORMED OPS CHECK OF THE EMERGENCY POWER SUPPLY UNITS,  BITE-CHECK IAW TASK CARD 18-3351-1-0003. OPS CHECK GOOD,  SYSTEM OK.  LED CAME ON.

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