# SDR AALA201711179008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 15, 2017
- Submitted: November 17, 2017
- Operation: Air carrier
- Aircraft: [N154AA](https://openairdocs.org/aircraft/N154AA), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6928
- Aircraft time: 6,061 hours, 2,326 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146210
- Part serial: 151036
- Condition: No Test
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: C
- Nature of condition: L, J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201711179008

## Discrepancy

DURING A CHECK OF EMERGENCY LIGHTS,  CIDS1 EMERGENCY POWER SUPPLY UNIT DISPLAYED AFT LEFT BATTERY FAULT. REPLACED THE POWER SUPPLY UNIT IAW AMM 33-51-38.

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