# SDR AALA2018100230005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 30, 2018
- Submitted: October 2, 2018
- 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: 7,647 hours, 764 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Control Unit
- Part number: 100260102
- Condition: Inoperative
- 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/AALA2018100230005

## Discrepancy

L4 DOOR EMERGENCY LIGHT WAS INOPERATIVE.  MAINTENANCE REPLACED THE WIRELESS EMERGENCY LIGHTING SYSTEM CONTROL UNIT AND PERFORMED SATISFACTORY OPERATIONAL CHECK.

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