# SDR CALA2026031314557

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 12, 2026
- Submitted: March 13, 2026
- Operation: Air carrier
- Aircraft: [N2136U](https://openairdocs.org/aircraft/N2136U), registered now
- Make and model: Boeing 777-300ER
- Registry model: [Boeing 777-300ER](https://openairdocs.org/model/boeing-777-300er) (OpenAirDocs)
- Aircraft serial: 62648
- Aircraft time: 38,473 hours, 4,165 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71701100
- Condition: Broken
- 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/CALA2026031314557

## Discrepancy

THE PIN OF THE FWD EMERGENCY LIGHT POWER SUPPLY BATTERY PACK (M33400) AT THE DOOR 4L FOUND BROKEN.  REPLACED THE FWD EMERGENCY LIGHT POWER SUPPLY BATTERY PACK (M33400) AT THE DOOR 4L AND CARRIED OUT INSTALLATION TEST, THE RESULT WAS NORMAL IAW AMM 33-51-06-960-802 REV.106.

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