Service difficulty report · Bleed Valve · Dhav DHC3

Difficulty date
June 18, 2009
Submitted
August 3, 2009
Operation
General aviation
Make and model
Dhav DHC3
Aircraft time
20,480 hours
Engine
Pwa PT6A34
Propeller
Hartzl HCB3TN3
Part
Bleed Valve
Part number
310082903
Condition
Inoperative
Location
Engine
Stage of operation
DE
How discovered
O
Nature of condition
E
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 9.9 HRS IN ACFT, BLEED VALVE STARTED TO MAKE A HOOTING NOISE AND ALSO PRODUCED VIBRATIONS. ABOVE SYMPTOMS WERE ONLY SEEN ON POWER REDUCTIONS. BLEED VALVE WAS REPLACED WITH A SERVICEABLE UNIT WHICH CORRECTED THE DEFECT.