# SDR CALA2021072601186

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 24, 2021
- Submitted: July 26, 2021
- Operation: Air carrier
- Aircraft: [N76021](https://openairdocs.org/aircraft/N76021), registered now
- Make and model: Boeing 777224
- Aircraft serial: 39776
- Aircraft time: 49,853 hours, 4,633 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: ADD71701100
- Part serial: 122815
- Condition: Discharged
- 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/CALA2021072601186

## Discrepancy

TEST FOUND OHAR BUNK1-3 EMERGENCY LIGHT INOP.    REPLACED THE CABIN OHAR AREA EMERGENCY POWER SUPPLY M33123 AND OP TEST CARRIED OUT FOUND NORMAL AS PER AMM 33-51-06-960-802 REV 92.

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