# SDR AALA201802029022

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 30, 2018
- Submitted: February 5, 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: 4,872 hours, 502 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Control Unit
- Condition: Faulty
- 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/AALA201802029022

## Discrepancy

AHM ALERT, CLASS 31.  REMOTE CONTROL UNIT CONFIGURATION DOES NOT AGREE WITH OTHER WIRELESS EMERGENCY LIGHTING SYSTEM CONTROL UNITS,  FAULT CODE 33-12131.  RAN SYSTEM CONFIGURATION REPORT IAW AMM DMC-B787-A-33-51-00-03A-300D-A.  REMOVED AND REPLACED CONTROL UNIT IAW AMM 33-51-07. OPS CHECKED NORMAL.

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