# SDR CALA2026080918400

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 2026
- Submitted: August 10, 2026
- Operation: Air carrier
- Aircraft: [N29978](https://openairdocs.org/aircraft/N29978), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 66137
- Aircraft time: 30,357 hours, 2,990 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: AD100260201
- Part serial: 1262
- Condition: Faulted
- Location: Zone 200
- Part time: 8,694 hours, 816 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026080918400

## Discrepancy

GENERAL ILLUMINATION LIGHT OPS TEST, FOUND INOP ABOVE SEAT 22DEF IAW HAECO NON-ROUTINE 9461558,  NOTE THE WIFI EMER LIGHTING WELS BATTERY INSTALLED.   REPLACED THE WCU CLASS 13.1 (M3351081) & WBU AT ZONE 2 MID BIN AREA AND SOFTWARE INSTALLATION & INSTALLATION TEST, FOUND NORMAL, IAW AMM 33-51-07-01B-520A/720A-A REV.210.

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