# SDR CALA2025112111383

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 20, 2025
- Submitted: November 21, 2025
- Operation: Air carrier
- Aircraft: [N2250U](https://openairdocs.org/aircraft/N2250U), registered now
- Make and model: Boeing 777-300ER
- Registry model: [Boeing 777-300ER](https://openairdocs.org/model/boeing-777-300er) (OpenAirDocs)
- Aircraft serial: 66590
- Aircraft time: 25,384 hours, 2,915 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cabin
- Stage of operation: IN
- How discovered: V
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025112111383

## Discrepancy

ON ACCOUNT OF A INDISTINGUISHABLE ODOR IN CABIN,  INSPECTED DUCTS FOR EVIDENCE OF OIL IAW AMM 36-12-04-200-801.  OPENED DUCT IN  A/C BAY JUST BEFORE OZONE CONVERTER, NO EVIDENCE OF ANY CONTAMINATION. SHOULD READ OPENED BOTH LT AND RT SIDE DUCTS. PRIOR TO THE OZONE CONVERTERS.

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