# SDR CALA2026070717600

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 29, 2026
- Submitted: July 7, 2026
- Operation: Air carrier
- Aircraft: [N459UA](https://openairdocs.org/aircraft/N459UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1192
- Aircraft time: 78,275 hours, 33,827 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/CALA2026070717600

## Discrepancy

CABIN EMERGENCY LIGHTING BATTERY CAPACITY - REPLACED ON A-CHECK. REQUIRES 4 BATTERIES,  REMOVED AND REPLACED ALL 4 EPSU BATTERIES 10WL, 11WL, 12WL, 13WL REF AMM 33-51-38-400-001-A OPS CHECKED GOOD, NO FAULTS FOUND AT THIS TIME.

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