# SDR AALA202104239002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 22, 2021
- Submitted: April 23, 2021
- Operation: Air carrier
- Aircraft: [N972UY](https://openairdocs.org/aircraft/N972UY), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4123
- Aircraft time: 39,274 hours, 14,447 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146210
- Part serial: 133416
- Condition: Faulted
- Location: Emergency Lights
- Part time: 39,270 hours, 14,445 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202104239002

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: MID RIGHT EMERGENCY POWER SUPPLY UNIT 14WL FAULTING. REPLACED MID RIGHT EMERGENCY POWER SUPPLY UNIT 14WL PER AMM 33-51-38.

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