Service difficulty report · Pressure Switch · Pilats PC1245

Difficulty date
March 20, 2002
Submitted
April 26, 2002
Operation
General aviation
Make and model
Pilats PC1245
Aircraft time
643 hours
Engine
Pwa PT6A67B
Propeller
Hartzl HCE4A3D
Part
Pressure Switch
Condition
Failed
Location
Hyd System
Stage of operation
CR
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

(CAN) AFTER TAKEOFF, REPORTED THE HYDRAULIC PUMP SEEMED TO RUN LONGER THAN NORMAL, AND THAT THE UNDER FLOOR HEATER WAS NOT FUNCTIONING. INVESTIGATION REVEALED THAT THE HYDRALIC SYSTEM PRESSURE SWITCH WAS INTERMITTENT, CAUSING THE HYDRAULIC PUMP TO RUN UNTILL THE THERMAL SWITCH SHUT IT OFF, AND ALSO DISABLEING THE UNDER FLOOR HEATER. THE SWITCH WAS REPLACED WITH NEW, AND THE SYSTEM FUNCTIONS NORMALLY.