# SDR AALA202002039023

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 31, 2020
- Submitted: February 3, 2020
- Operation: Air carrier
- Aircraft: N278AY
- Make and model: Airbus A330-323
- Registry model: [Airbus A330-323](https://openairdocs.org/model/airbus-a330-323) (OpenAirDocs)
- Aircraft serial: 388
- Aircraft time: 85,005 hours, 11,842 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146210
- Part serial: 142848
- Condition: Failed
- Location: Emergency Lights
- Part time: 20,173 hours, 2,884 cycles
- 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/AALA202002039023

## Discrepancy

AIRCRAFT IN BASE VISIT: DONT PASS OPERATIONAL TEST EPSU-EMERGENCY POWER SUPPLY UNIT FWDLH PASSENGER CABIN. REMOVED AND REPLACED EPSU 11WL ON LH FWD CABINE PASSENGER IAW AMM 33-51-38-000-801-A AND AMM 33-51-38-400-801-A.

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