# SDR CALA2024051301440

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 9, 2024
- Submitted: May 13, 2024
- Operation: Air carrier
- Aircraft: [N78002](https://openairdocs.org/aircraft/N78002), registered now
- Make and model: Boeing 777224
- Aircraft serial: 27578
- Aircraft time: 115,184 hours, 12,089 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Condition: No Test
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2024051301440

## Discrepancy

DOOR 4 RIGHT AFT EMERGENCY POWER SUPPLY UNIT (M33409) FAILED OPE RATIONAL TEST. REQUIRED TO REPLACE BATTERY PACK. DOOR 4 RIGHT AFT EMERGENCY POWER SUPPLY BATTERY PACK REPLACEMENT CARRIED OUT AS PER AMM33-51-06 REV 100 DATED 05 JAN 2024.INSTALLATION TEST CARRIED OUT AND FOUND WORKING SATISFACTORY.

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