# SDR CALA2018032601022

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 26, 2018
- Submitted: March 26, 2018
- Operation: Air carrier
- Aircraft: [N810UA](https://openairdocs.org/aircraft/N810UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 843
- Aircraft time: 63,404 hours, 26,599 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: No Test
- Location: Emergency Lights
- 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/CALA2018032601022

## Discrepancy

AFTER EMERGENCY LIGHT CHECK,  TWO MESSAGES CAME UP,  EPSU UNIT AFT L,  AND ESPU BATTERY FWD L.   REPLACED THE  POWER SUPPLY AND BATTERY IAW MM 31-51-38,  AND MM 33-51-00.   TESTED OK.

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