# SDR AALA202005159004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2020
- Submitted: May 15, 2020
- 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: 12,352 hours, 1,626 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 100260103
- Condition: Defective
- Location: Cabin
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202005159004

## Discrepancy

AIRCRAFT GROUNDED - EMERGENCY PATH LIGHTING, ROWS 6-12, COMES ON INTERMITTENTLY. REPLACED WBU (WELS BATTERY UNIT) AT L1 DOOR PER AMM 33-51-07, ACCOMPLISHED WBU SYSTEM RE-KEY, ALL CHECKS NORMAL.

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