# SDR CALA2021092201653

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 21, 2021
- Submitted: September 22, 2021
- Operation: Air carrier
- Aircraft: [N787UA](https://openairdocs.org/aircraft/N787UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26939
- Aircraft time: 98,495 hours, 13,264 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: NA
- Condition: Inoperative
- Location: Na
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2021092201653

## Discrepancy

EMERGENCY BATTERY PACK INOP LOCATED ABOVE 2L DOOR REMOVED AND REPLACED EMERGENCY BATTERY PACK REF B777 AMM 33-51-06 REV 92A OPPS CHECK GOOD

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