# SDR SWI2025F00770

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 28, 2025
- Submitted: June 30, 2025
- Operation: Air carrier
- Aircraft: [N603SK](https://openairdocs.org/aircraft/N603SK), registered now
- Make and model: Cndair CL6002C10
- Aircraft serial: 10248
- Aircraft time: 42,016 hours, 32,606 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Condition: Faulted
- Location: Lt A/C Pack
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWI2025F00770

## Discrepancy

L BLEED DUCT WARNING AND CAUTION MESSAGE IN FLIGHT. PERFORMED QRH PROCEDURE SUCCESSFULLY.  (FLIGHT 6447 - FILED CLOSED)THIS DISCREPANCY WAS TRANSFERRED TO CAMP ITEM 30398967 WITH THE FOLLOWING CORRECTIVE ACTION: "INTERROGATED MDC, FOUND B1-349536, ALSO FOUND LEAK EVENT HISTORY CH A 141 AT 27% AND CH B 142 AT 24%. PERFORMED LEAK CHECK OF LH PACK IN REFERENCE TO AMM 21-53-00, FOUND AIR COMING FROM LH FLOW CONTROL VALVE. SEE CP 30402541 FOR R/R OF LH FLOW CONTROL VALVE. DURING INSTALLATION OF LH FLOW CONTROL VALVE, FOUND LH INLET DUCT DAMAGED, SEE CP 30402545 FOR R/R OF DUCT. PERFORMED LEAK CHECK OF LH PACK SYSTEM IN REFERENCE TO AMM 21-53-00, LEAK CHECK GOOD AT THIS TIME. "

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