# SDR CALA2025061805657

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 14, 2025
- Submitted: June 18, 2025
- Operation: Air carrier
- Aircraft: [N874UA](https://openairdocs.org/aircraft/N874UA), registered now
- Make and model: Airbus A319-132
- Registry model: [Airbus A319-132](https://openairdocs.org/model/airbus-a319-132) (OpenAirDocs)
- Aircraft serial: 2008
- Aircraft time: 58,362 hours, 35,581 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- 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/CALA2025061805657

## Discrepancy

DURING EMER LIGHT SYS TEST, EPSU BATTERY AFT L FAULT REPLACED AFT EPSU (13WL) BATTERY REF AMM 33-51-38/401. BATTERY FAULT CLEARED. BITE RETURNED L AFT EPSU INT LOAD FAULT. DURING TEST, EXIT LIGHT 52WL DID NOT FLICKER. EPSU (13WL) AND AFT CENTER AISLE OVERHEAD EMERG EXIT LIGHT(52WL) NIS DEN. M/L UPDATED.   RESET POWER TO AFT EPSU 13WL. PERFORMED OPS CHECK PER AMM 33-51-00. OPS CHECK GOOD. BITE TEST PASSED WITH NO FAULTS AND ALL EMERG LIGHTS ILLUMINATE NORMAL.

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