# SDR DALA2017112008235

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 16, 2017
- Submitted: November 20, 2017
- Operation: Air carrier
- Aircraft: [N820DX](https://openairdocs.org/aircraft/N820DX), registered now
- Make and model: Boeing 757-26D
- Registry model: [Boeing 757-26D](https://openairdocs.org/model/boeing-757-26d) (OpenAirDocs)
- Aircraft serial: 33960
- Aircraft time: 33,617 hours, 19,685 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Defective
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2017112008235

## Discrepancy

FOUND THE EMERGENCY LIGHT CHARGER CIRCUIT BREAKER AT P11 TRIPPED & UNABLE TO RESET. FOUND EMERGENCY LIGHT BATTERY PACK M11081 DEFECTIVE.  REPLACED THE BATTERY IAW AMM 33-51, & CHECKED OK.

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