# SDR AALA201811089014

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 6, 2018
- Submitted: November 8, 2018
- Operation: Air carrier
- Aircraft: [N826AN](https://openairdocs.org/aircraft/N826AN), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 40647
- Aircraft time: 6,396 hours, 666 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Control Unit
- Part number: 100260103
- Part serial: 1160918
- Condition: Failed
- Location: Emergency Lights
- 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/AALA201811089014

## Discrepancy

EMERGENCY LIGHTS IN THE FIRST CLASS CABIN WILL NOT TURN OFF WHEN AIRCRAFT WAS SHUTDOWN.  CHECKED AND MAINTENANCE MESSAGE FAULT 45-16571, AND 42-01065. TROUBLESHOT IAW AMM 33-51-07.  REPLACED THE L1 WIRELESS EMERGENCY LIGHTING SYSTEM CONTROL UNIT, SOFTWARE LOAD WAS ACCEPTED.

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