# SDR CALA2023053101704

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 30, 2023
- Submitted: May 31, 2023
- Operation: Air carrier
- Aircraft: [N771UA](https://openairdocs.org/aircraft/N771UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26932
- Aircraft time: 98,382 hours, 17,617 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: D71701100
- Part serial: 184516
- Condition: Failed
- Location: L1 Door
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K, O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023053101704

## Discrepancy

WHEN CARRY OUT EMERGENCY LIGHT POWER SUPPLY CAPACITY CHECK FOUND L1 DOOR M33093 POWER PACK FAILED REF HAECO NR NO. 9459676 - ORIGINATED BY EMP V903179, SPEC NO.B777-33-3-7019. PERFORMED BY EMP V903179, IDT BY EMP V903189, L1 DOOR M33093 BATTERY PACK REPLACED AND OP TEST FOUND NORMAL REF AMM 33-51-06- 960-802 REV.98.

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