# SDR CALA2022093002573

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 29, 2022
- Submitted: September 30, 2022
- Operation: Air carrier
- Aircraft: [N794UA](https://openairdocs.org/aircraft/N794UA), registered now
- Make and model: Boeing 777
- Aircraft serial: 26953
- Aircraft time: 100,324 hours, 13,244 cycles
- System (JASC): [3300 · Lighting System](https://openairdocs.org/jasc/3300)
- Part: Battery
- Part number: D71701100
- Part serial: 156265
- Condition: None
- Location: Llar
- Stage of operation: IN
- How discovered: O
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2022093002573

## Discrepancy

B777-33-3-7025  LLAR BACKUP LIGHTS BATTERY PACK DEEP CYCLE TEST FAIL. TRANSFER REF. NON-ROUTINE WO.1097714 AND ORIGINATED BY EMP V902113. LLAR BACKUP EMER LIGHT BATTERY REPLACED AND TESTED NORMAL AS PER AMM 33-51-06. WORK ACCOMPLISHED BY MECHANIC V898181 INSPECTED BY V896958.

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