# SDR AALA20190417002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 15, 2019
- Submitted: April 17, 2019
- Operation: Air carrier
- Aircraft: [N905AU](https://openairdocs.org/aircraft/N905AU), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7700
- Aircraft time: 6,085 hours, 2,258 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146210
- Part serial: 155930
- Condition: Failed
- 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/AALA20190417002

## Discrepancy

AIRCRAFT NOT GROUNDED: MAINTENANCE REPORTS CIDS1 EPSU SYSTEM TEST FAILED 11WL. REMOVED AND REPLACED 11WL EPSU IAW AMM 33-51-38. OPS NORMAL.

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