# SDR CALA2021071901133

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 16, 2021
- Submitted: July 19, 2021
- Operation: Air carrier
- Aircraft: [N204UA](https://openairdocs.org/aircraft/N204UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 28713
- Aircraft time: 94,562 hours, 12,441 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Condition: Low
- Location: Door 3l
- 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/CALA2021071901133

## Discrepancy

EMERGENCY LT OPERATIONAL CHECK FOUND L3 EMERGENCY LT BATTERY (M33400) LOW CAPACITY, REF TO HAECO NON-ROUTINE NO.9445971, SPEC NO. B777-33-3-7031. PERFORMED BY EMP V905494 IDT BY TA687, DOOR 3L EMERGENCY LIGHT BATTERY PACK M33400 REPLACED, INSTALLATION TEST PERFORMED, FOUND RESULT NORMAL REF TO AMM 33-51-06-960-802 REV 92.

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