# SDR CALA2021042600531

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 24, 2021
- Submitted: April 26, 2021
- Operation: Air carrier
- Aircraft: [N464UA](https://openairdocs.org/aircraft/N464UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1290
- Aircraft time: 67,346 hours, 27,143 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Discharged
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2021042600531

## Discrepancy

PER NR 9294161/40161 ALL CABIN EMERGENCY LIGHTS FAIL TO ILLUMINA TE WITH THE SWITCH IN THE ARMED POSITION AND THE CIRCUIT BREAKER S PULLED (SYSTEM TESTS OK FROM THE PTP ON CONSECUTIVE TESTS)  REMOVED AND REPLACED EPSU EMERGENCY BATTERY/OWL. OPS CHECK OF TH E EMERGENCY POWER SUPPLY UNITS TEST GOOD. IAW A320 AMM 33-51-38- 000-002-A/33-51-38-400-002-A/33-51-00-710-001-A.

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