# SDR SWI2025F00768

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 26, 2025
- Submitted: June 27, 2025
- Operation: Air carrier
- Aircraft: [N496CA](https://openairdocs.org/aircraft/N496CA), registered now
- Make and model: Cndair CL6002B19
- Aircraft serial: 7791
- Aircraft time: 42,883 hours, 43,168 cycles
- Engine: Ge CF343B1
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Smoke
- Location: Nr 2
- Stage of operation: TX
- 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/SWI2025F00768

## Discrepancy

AFTER STARTING ENGINE 2 (FOR SINGLE ENGINE TAXI) TURNED PACKS ON AND STARTED TO HEAR A WHIRRING NOISE. SUBSEQUENTLY, SECONDS LATER WHAT WOULD APPEAR TO BE SMOKE WAS ENTERING THE COCKPIT WITH A BAD AROMA.IMMEDIATELY TURNED PACKS OFF.STARTED ENGINE 1 AND PULLED BACK INTO THE GATE.  (FLIGHT 5526 - FILED CLOSED)RAN BOTH PACKS INDIVIDUALLY FOR APPROX 30 MINUTES. NOTED FOUL SMELL IN FLIGHT DECK ONLY WHEN L PACK WAS ON. VERIFIED L PACK PRESSURE WAS HIGHER THAN RIGHT PACK BY 25PSI. ECS SYNOPTIC ALSO SHOWED L PACK TEMP SURGED TO 105C. L PACK PRESS & L PACK HIGH TEMP INTERMITTENTLY DISPLAY ON EICAS. INSPECTED BOTH PACKS DUCT INTEGRITY; NO DEFECTS WERE NOTED. CHECKED WATER SEPARATOR DRAIN LINES; NO CLOG NOTED. CHECKED OIL & OBSERVED NO OIL ON L ACM SIGHT GLASS. PLEASE REF. AML #1639597 FOR L PACK DEFERRAL.

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