# SDR AALA201909059006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 4, 2019
- Submitted: September 5, 2019
- Operation: Air carrier
- Aircraft: [N182UW](https://openairdocs.org/aircraft/N182UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1536
- Aircraft time: 61,328 hours, 23,087 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32145410
- Part serial: 4022
- Condition: Failed
- Location: Cabin
- Part time: 61,336 hours, 23,089 cycles
- Stage of operation: IN
- How discovered: C
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201909059006

## Discrepancy

AIRCRAFT IN BASE VISIT: MAINTENANCE REPORTS FAULT EPSU-EMERGENCY POWER SUPPLY UNIT 13WL IN PASSENGER CABIN (1 EA). MAINTENANCE REMOVED AND REPLACED EPSU EMERGENCY POWER SUPPLY UNIT 13WL IN PASSENGER CABIN IAW AMM 33-51-38-400-001-A AND PERFORMED OPERATIONAL CHECK OF THE EPSU THRU BITE CHECK 33-51-00-710-001-A. BITE TEST IS OK.

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