# SDR CALA2026031914683

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 16, 2026
- Submitted: March 19, 2026
- Operation: Air carrier
- Aircraft: [N2138U](https://openairdocs.org/aircraft/N2138U), registered now
- Make and model: Boeing 777-300ER
- Registry model: [Boeing 777-300ER](https://openairdocs.org/model/boeing-777-300er) (OpenAirDocs)
- Aircraft serial: 62649
- Aircraft time: 36,910 hours, 3,957 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71701100
- Condition: Inoperative
- 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/CALA2026031914683

## Discrepancy

EMERGENCY BATTERY PACK (M33096 ABOVE DOOR 2L) FAILED CAPACITY TEST.  REPLACED THE BATTERY PACK,  OPS CHECKS GOOD.

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