Service difficulty report · Control Valve · Cessna 525B

Difficulty date
October 15, 2025
Submitted
January 9, 2026
Operation
Air carrier
Aircraft
N780JS
Make and model
Cessna 525B
Aircraft serial
525B0043
Aircraft time
13,721 hours, 9,364 cycles
Part
Control Valve
Part number
260132
Part serial
0942
Condition
Failed
Location
Cabin Pressure
Part time
7,375 hours, 1,786 cycles
Stage of operation
CL
How discovered
O
Nature of condition
P
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AFTER DEPARTURE OF 27L OUT OF KPHL I FELT MY EARS POP. LOOKED DOWN AND THE PRESSURE CONTROLLER WAS BLANK. THIS WAS ABOUT 1500 AGL.

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