# SDR AALA202511269534

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 25, 2025
- Submitted: November 26, 2025
- Operation: Air carrier
- Aircraft: [N838AA](https://openairdocs.org/aircraft/N838AA), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 40659
- Aircraft time: 29,443 hours, 3,592 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 100260201
- Condition: Degraded
- Location: Zone 200
- 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/AALA202511269534

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: WELS BATTERY #4 DEGRADED. MAINTENANCE REPLACED WITH A NEW WELS BATTERY.

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