# SDR CALA2020092601141

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 23, 2020
- Submitted: October 5, 2020
- Operation: Air carrier
- Aircraft: [N38950](https://openairdocs.org/aircraft/N38950), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 36401
- Aircraft time: 27,392 hours, 2,533 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 100260201
- Part serial: ST0044728
- Condition: Faulted
- Location: Emergency Lights
- 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/CALA2020092601141

## Discrepancy

PED DOOR 3 RT FWD NR 15 REMOTE WELS CONTROL UNIT POWER BATTERY FAILED, REFER NON-ROUTINE NR 9416026.    REPLACED CLASS 15 WELS CONTROL UNIT BATTERY AND PERFORMED INSTALLATION TEST FOUND NORMAL.  THE FAULT MESSAGE FOUND CLEARED, REFER AMM 33-51-07-02B-520A-A & AMM 33-51-07-02B-7 20A-A REV 140.

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