# SDR AALA202309189101

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 12, 2023
- Submitted: September 18, 2023
- Operation: Air carrier
- Aircraft: [N830AN](https://openairdocs.org/aircraft/N830AN), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 40650
- Aircraft time: 2,713 hours, 22,466 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 100260201
- Condition: Inoperative
- Location: Zone 200 - Fuse
- 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/AALA202309189101

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: WIRELESS EMERGENCY LIGHTING SYSTEM (WELS) INOPERATIVE. REPLACED WELS BATTERY UNIT. PER AMM 33-51-07

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