# SDR CALA2025102710561

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 24, 2025
- Submitted: October 27, 2025
- Operation: Air carrier
- Aircraft: [N2341U](https://openairdocs.org/aircraft/N2341U), registered now
- Make and model: Boeing 777-300ER
- Registry model: [Boeing 777-300ER](https://openairdocs.org/model/boeing-777-300er) (OpenAirDocs)
- Aircraft serial: 63721
- Aircraft time: 36,745 hours, 3,923 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Unknown
- Condition: Vapor
- Location: Zone 900
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025102710561

## Discrepancy

VAPER SMOKE ODOR IN 4R LAV,. SMOKE LAV LIGHT CAME ON FOR A FEW SECONDS. REF TASK 26-13-00-730-801.  PERFORMED SMOKE DETECTOR TEST ALL PARAMETERS PASSED CSAP SHOWED NO FAULTS, NO EICAS MSGS.  POSSIBLE VAPER IN LAV.  OPS CHKD GOOD.

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