# SDR CALA2026011112856

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 10, 2026
- Submitted: January 12, 2026
- Operation: Air carrier
- Aircraft: [N27903](https://openairdocs.org/aircraft/N27903), registered now
- Make and model: Boeing 787-8
- Registry model: [Boeing 787-8](https://openairdocs.org/model/boeing-787-8) (OpenAirDocs)
- Aircraft serial: 34823
- Aircraft time: 51,727 hours, 6,441 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cockpit
- Stage of operation: IN
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026011112856

## Discrepancy

FLIGHT CREW REPORTED BURNING SMELL IN COCKPIT DURING FLIGHT FOR APPROX 1 MINUTE.  INSPECTED COMPRESSOR R2 AND FOUND NO ACRID SMELLS. DURING TROUBLESHOOTING OF CAC MESSAGE. RAN RIGHT CAC ON BOTH COMPRESSORS 1 AND 2 FOR OVER AN HOUR WITH NO SMELLS NOTED. FOUND CMSC R2 CAC TO BE INOPERATIVE. SEE REFERRED LOG PAGE FOR MAINTENANCE PERFORMED IN COMPONENT REPLACEMENT. CONFIRMED WITH TOMC THAT THIS SATISFIES CORRECTIVE ACTION. NO FURTHER DISCREPANCIES NOTED.

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