Service difficulty report · Valve · Cessna 404CESSNA

Difficulty date
December 11, 2003
Submitted
January 5, 2004
Operation
General aviation
Make and model
Cessna 404CESSNA
Engine
Cont GTSIO520M
Propeller
Mcauly 3FF32C501
Part
Valve
Condition
Contaminated
Location
Hyd System
Stage of operation
LD
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

(AUS) HYDRAULIC SYSTEM UNLOADING VALVE CONTAINED DEBRIS UNDER THE VALVE SEAT CAUSING THE VALVE TO REMAIN PARTIALLY OPEN AND PREVENTING THE CORRECT HYDRAULIC PRESSURE FROM BEING REACHED.