# SDR AALA202101269012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 25, 2021
- Submitted: January 26, 2021
- Operation: Air carrier
- Aircraft: [N818AL](https://openairdocs.org/aircraft/N818AL), registered now
- Make and model: Boeing 787-8
- Registry model: [Boeing 787-8](https://openairdocs.org/model/boeing-787-8) (OpenAirDocs)
- Aircraft serial: 40636
- Aircraft time: 14,469 hours, 1,945 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Condition: Inoperative
- Location: E Lite Control
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202101269012

## Discrepancy

AIRCRAFT WAS NOT GROUNDED.  4R DOOR WELS CONTROL UNIT BATTERY POWER IS DEGRADED.  REPLACED 4R DOOR WELS BATTERY UNIT, IAW AMM 33-51-07.  OPERATIONS CHECK GOOD.

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