# SDR AALA202003099002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 2020
- Submitted: March 9, 2020
- Operation: Air carrier
- Aircraft: [N841AN](https://openairdocs.org/aircraft/N841AN), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 40657
- Aircraft time: 4,641 hours, 543 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Control Unit
- Part number: 100260103
- Part serial: 1177874
- Condition: Faulty
- 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/AALA202003099002

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: EMERGENCY LIGHT SYSTEM WAS NOT WORKING AT ROWS 16 THROUGH 18. MAINTENANCE REPLACED CONTROL UNIT UNDERNEATH SEAT 18D PER AMM DMC-B787-A-33-51-07-01A-720A-A AND PERFORMED SATISFACTORY OPERATIONAL CHECK.

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