# SDR CALA2026011112855

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 9, 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): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Motor
- Part number: 7000045H04
- Part serial: AAEH001164
- Condition: Faulted
- Location: Compressor
- Part time: 6,780 hours, 841 cycles
- 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/CALA2026011112855

## Discrepancy

CABIN AIR COMPRESSOR R2 CABIN AIR COMPRESSOR R2 HAS FAILED OR HAS A FAULT, IS UNAVAILABLE, OR HAS BEEN SELECTED OFF. STATUS CAC R2 WITH FAIL HAD BURNING SMELL IN COCKPIT FOR 1 MIN CREATED SECOND LOG PAGE DUE TO SMOKE OR FUMES REPORTED IN CABIN.  INTERROGATED FAULT HISTORY. FOUND 1 FAULT FOR CAC R2 SURGING. PER FIM DMC-B787-A-21-50-F1-90A-421A-A, NO MORE MAINTENANCE ACTION NECESSARY, AS ONLY 1 SURGE HAS BEEN NOTED IN HISTORY. FOUND CORRELATING MESSAGE 24-50357. TROUBLESHOT REF FIM DMC-B787-A-24-10-F5-E0A-421A-A. REMOVED AND REPLACED COMMON MOTOR START CONTROLLER (RIGHT 2 CAC), M2415041. OP CHECKED GOOD. MESSAGE EXTINGUISHED, NO FURTHER FAULTS NOTED.

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