Service difficulty report · Pressure Valve · Dhav DHC8102

Difficulty date
January 23, 2005
Submitted
February 3, 2005
Operation
General aviation
Make and model
Dhav DHC8102
Aircraft time
41,248 hours
Engine
Pwa PW120A
Propeller
Hamstd 14SF7
Part
Pressure Valve
Part number
1849
Condition
Faulty
Location
Manifold
Component
Pressure Manifo
Component part number
AEB2131011
Stage of operation
CL
How discovered
O
Nature of condition
M, J
Precautionary procedure
A

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

What was found

(CAN) THE CREW REPORTED , AFTER GEAR UP SELECTION , LOST NR 2 MAIN AND STANDBY PRESSURE (SPU ON). AFTER APPROXIMATELY 3 MINUTES THEY RECEIVED NR 2 STANDBY PUMP HOT LIGHT. ON SHORT FINAL NR 2 MAIN PRESSURE RETURNED BUT NR 2 STANDBY HOT LIGHT REMAINED ON EVEN THOUGH NR 2 STANDBY PUMP CIRCUIT BREAKER WAS PULLED . IT ONLY WENT OUT WHEN BOTH ENGINES FEATHERED AFTER APPROXIMATELY 2 MINUTES. THE MAINTENANCE CREW AFTER TROUBLESHOOTING DETERMINED THE PRESSURE RELIEF VALVE TO BE AT FAULT AND REPLACED .