# SDR CALA2026090919342

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 7, 2026
- Submitted: September 9, 2026
- Operation: Air carrier
- Aircraft: [N78002](https://openairdocs.org/aircraft/N78002), registered now
- Make and model: Boeing 777224
- Aircraft serial: 27578
- Aircraft time: 125,428 hours, 13,143 cycles
- Engine: Ge GE9094B
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Discharged
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026090919342

## Discrepancy

THE FWD EMERGENCY LIGHT POWER SUPPLY   BATTERY PACK (M33232) AT THE DOOR 4R FOUND LOW CAPACITY.  REPLACED DOOR 4R FWD EMERGENCY POWER SUPPLY BATTERY AND OPERATION TEST OK, REF TO AMM 33-51-00-710-801 REV 107.

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