# SDR AALA201809119006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 8, 2018
- Submitted: September 11, 2018
- Operation: Air carrier
- Aircraft: [N542UW](https://openairdocs.org/aircraft/N542UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4134
- Aircraft time: 31,955 hours, 11,419 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: No Test
- 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/AALA201809119006

## Discrepancy

EMERGENCY LIGHT TEST FAILED .  REPLACED THE POWER SUPPLY BATTERY PACK 10WL IAW MM 33-51-00.  OPS NORMAL.

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