# SDR CALA2017110303907

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 3, 2017
- Submitted: November 4, 2017
- Operation: Air carrier
- Aircraft: [N26906](https://openairdocs.org/aircraft/N26906), registered now
- Make and model: Boeing 787-8
- Registry model: [Boeing 787-8](https://openairdocs.org/model/boeing-787-8) (OpenAirDocs)
- Aircraft serial: 34829
- Aircraft time: 20,250 hours, 2,646 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Control Unit
- 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/CALA2017110303907

## Discrepancy

REF ETASK WIRELESS EMERGENCY LIGHTING SYSTEM WCU BATTERY CARD NUMBER 78-3350-1-9800, WORK IS COMPLETE UP TO ITEM 1E. ON CONFIG PAGE SHOWS WCU REPORTING 26, AND WCU CONFIGURED TO 27. SUSPECT WC U-10 M3351070 LOCATED ABOVE SEAT 2D IN STOW BIN. PARTS COMING. REPLACED WCU AT DOOR 1L, COMPLETED ETASK CARD, OPS CHK OK. VERIFIED INSTALLATION AND OP CHECK

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