# SDR 9JLA2015012814558

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 31, 2014
- Submitted: January 28, 2015
- Operation: Air carrier
- Aircraft: [N190K](https://openairdocs.org/aircraft/N190K), registered now
- Make and model: Cessna 560CESSNA
- Aircraft serial: 5600279
- Aircraft time: 6,264 hours, 6,478 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Control Valve
- Part number: 19880001
- Part serial: 784A
- Condition: Faulty
- Location: Cabin Pressure
- Part time: 6,264 hours
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9JLA2015012814558

## Discrepancy

DURING THE CLIMB AFTER TAKEOFF, THE CABIN PRESSURIZATION WAS DIFFICULT TO CONTROL & MAINTAIN.  TROUBLE SHOT THE SYS & FOUND THAT THE LT ENG BLEED AIR CONTROL VLV WAS DEFECTIVE CAUSING THE PRESSURIZATION ISSUE.  THE DEFECTIVE CONTROL VLV WAS REMOVED PN 1988-00-01, SN 0784A & AN OVERHAULED UNIT WAS INSTALLED.  OPERATIONS CHECKED SATISFACTORY.

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