# SDR CALA2023103003223

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 24, 2023
- Submitted: October 30, 2023
- Operation: Air carrier
- Aircraft: N411UA
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 464
- Aircraft time: 92,146 hours, 36,036 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Condition: Failed
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: L
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023103003223

## Discrepancy

CABIN LIGHTS EMERGENCY CAPACITY TEST FAILED. REPALCEMENT OF EPSU BATTERY. (10WL) IS REQUIRED. (A3NB-33-3-6013) SEQ:633 ZONE:200 EPSU BATTERY (11WL) FAILED ON EMERGENCY LIGHTING BATTERY. WORK RECORDED ON UAL  LOGPAGE CAPACITY TEST AND REQUIRE REPLACEMENT. PREFORMED EPSU  BATTERY REPLACEMENT (11WL), IAW AMM:33-51-000-002/ 33-51-38-400-002 REV 122. TEST SATISFACTORY.

---
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, except the copies of manufacturers’ service documents, which belong to their rights holders.