# SDR AALA201903049038

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 2, 2019
- Submitted: March 5, 2019
- Operation: Air carrier
- Aircraft: [N823AN](https://openairdocs.org/aircraft/N823AN), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 40641
- Aircraft time: 9,574 hours, 962 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Condition: Discharged
- Location: Cabin
- 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/AALA201903049038

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: DOOR 4L EMERGENCY LIGHT WOULD NOT COME ON. MAINTENANCE REPLACED WIRELESS BATTERY UNIT PER AMM B787-A-33-51-07-01B-520A-A AND B787-A-33-51-07-01B-720A-A AND PERFORMED SATISFACTORY OPERATIONAL CHECK.

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