# SDR CALA2020091801118

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 16, 2020
- Submitted: September 18, 2020
- Operation: Air carrier
- Aircraft: [N791UA](https://openairdocs.org/aircraft/N791UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26933
- Aircraft time: 97,267 hours, 13,078 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Part serial: 139461
- Condition: Discharged
- 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/CALA2020091801118

## Discrepancy

EMERGENCY LIGHT BATTERY REPLACED AT L-3 ON ELB.  NOTED BY MX BATTERY PACK REPLACED THIS LOG OPENED FOR SDR REPORT BATTERY DEAD L-3.

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