Service difficulty report · Valve Comp Bleed · Dhav DHC6300

Difficulty date
January 15, 1996
Submitted
March 26, 2000
Operation
General aviation
Make and model
Dhav DHC6300
Engine
Pwa PT6A27
Part
Valve Comp Bleed
Part number
310082903
Condition
Sticking
Location
Dowel
Stage of operation
IN
Nature of condition
O
Precautionary procedure
E

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

What was found

(CAN)FOLLOWING CORRECTION OF A STARTING SNAG THE ENGINE WOULD NOT RESPOND TO THE THROTTLE BUT WOULD STAGNATE AND TEMPERATURES WOULD CLIMB UNTIL THE FUEL WAS SHUTOFF. INVESTIGATION FOUND THAT DUE TO EXTREMECOLD WEATHER THE LUBRICANT ON THE GUIDE DOWEL OF THE COMPRESSOR SURGE BLEED VALVE WOULD NOT PERMIT IT TO OPEN AND RELIEVE THE COMPRESSOR TO PERMIT ACCELERATION. THE EXISTING LUBRICANT WAS CLEANED FROM THE DOWEL AND FRESH LUBRICANT WAS APPLIED AND THE ENGINE OPERATED NORMALLY AFTERWARD.