# SDR CALA2026031314556

- 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: Discharged
- Location: Zone 200
- 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/CALA2026031314556

## Discrepancy

THE CTR EMERGENCY LIGHT POWER SUPPLY BATTERY PACK (M33305) AT DOOR 3R FOUND LOW CAPACITY.  REPLACED THE EMERGENCY LIGHT POWER SUPPLY BATTERY PACK (M33305) AT THE DOOR 3R AND CARRIED OUT INSTALLATION TEST, THE RESULT WAS NORMAL IAW AMM 33-51-06-960-802, REV.106.

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