# SDR AALA202005309004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 28, 2020
- Submitted: May 30, 2020
- Operation: Air carrier
- Aircraft: [N809AA](https://openairdocs.org/aircraft/N809AA), registered now
- Make and model: Boeing 787-8
- Registry model: [Boeing 787-8](https://openairdocs.org/model/boeing-787-8) (OpenAirDocs)
- Aircraft serial: 40627
- Aircraft time: 18,408 hours, 2,230 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Unknown
- Condition: Malfunctioned
- Location: Cabin
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202005309004

## Discrepancy

AIRCRAFT IN BASE VISIT.  WHEN DISCONNECTING MAIN BATTERY, EMERGENCY LIGHTS WON’T TURN OFF.   EMERGENCY LIGHTING SYSTEM PLACED IN SLEEP MODE IAW AMM 33-51-00 AND DEACTIVATED IAW AMM 33-51-00. EMERGENCY LIGHTS REMAIN OFF WHEN BATTERY DISCONNECTED.

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