# SDR AALA201810299047

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 27, 2018
- Submitted: October 29, 2018
- Operation: Air carrier
- Aircraft: [N837AN](https://openairdocs.org/aircraft/N837AN), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 40658
- Aircraft time: 621 hours, 80 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Control Unit
- Condition: Faulted
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201810299047

## Discrepancy

DURING A MAINTENANCE CHECK,  FOUND THE L1 DOOR EXIT LIGHT FAULT MESSAGE 33-11601 ACTIVE.  THE AIRCRAFT WAS GROUNDED.  MAINTENANCE REPLACED THE EMERGENCY LIGHT CONTROL UNIT AND PERFORMED SATISFACTORY OPERATIONAL CHECK IAW MM 33-51-07.

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