Service difficulty report · Shuttle Valve · Dhav DHC8102

Difficulty date
August 19, 2002
Submitted
August 30, 2002
Operation
Air carrier
Make and model
Dhav DHC8102
Aircraft time
37,542 hours
Engine
Pwa PW120A
Propeller
Hamstd 14SF7
Part
Shuttle Valve
Condition
Stuck
Location
Hyd System
Stage of operation
LD
How discovered
O
Nature of condition
K, J
Precautionary procedure
O

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

What was found

(CAN) DOUBLE HYDRAULIC FAILURE PRIOR TO LANDING. AIRCRAFT STOPPED USING PARKING BRAKE JUST OFF END OF RUNWAY, WITH NO DAMAGE OR INJURY. NR 1 BRAKE UNIT FOUND LEAKING. NR 1 HYDRAULIC SYSTEM SHUTTLE VALVE FOUND STUCK OPEN ALLOWING DOUBLE HYDRAULIC SYSTEM FAILURE. BOTH BRAKE UNITS AND SHUTTLE VALVES REPLACED.