# SDR CALA2026011913038

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 16, 2026
- Submitted: January 19, 2026
- Operation: Air carrier
- Aircraft: [N26952](https://openairdocs.org/aircraft/N26952), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 36403
- Aircraft time: 50,143 hours, 4,773 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Compressor
- Condition: Failed
- 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/CALA2026011913038

## Discrepancy

CABIN AIR CPRSR L2 CABIN AIR COMPRESSOR L2 HAS FAILED OR HAS A FAULT, IS UNAVAILABLE, OR HAS BEEN SELECTED OFF. AFTER ENG START FLT DECK VERY HOT W/ACRID ODOR NO EXISTING FAULT AND FAULT HISTORY . GROUND TEST CABIN AIR CONDITIONING TEMP CONTROL SYS , SYS TEST LT & RT PACK SYS AIR ON PASSED . INSPECTED PACK LT & RT NO FAULT NOTED . RAM AIR & VENT FAN INSPECTED NO FAULT NOTED. RECIRC FAN CHECK, NO FAULT . CARRIED OUT SMOKE & FUMES NO ACRID ODOR NOTED IAW FIM DMC-A-21-20-F5-72A-421A-A.  DEFECT DEFERRED IAW MEL 2151CE. L2 CAC DEACTIVATED IAW DDG 21-51-01-02-01-01.  MAINT REQUIREMENTS COMPLIED WITH. INOP PLACARD APPLIED.   L2 CAC REACTIVATED PER DDG21-51-01-02-01-01. NIL MSG EXIST. L PACK CONTROL SYS TEST IAW AMM DMC-B787-A-21-51-00-00A-300B-A, CMCF GROUND TEST: 21- CABIN AIR CONDITIONING/TEMP CONTROL SYS, SYS, LT PACK SYS AIR ON/OFF CARRIED OUT. TEST PASSED NO FAULTS.

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