Service difficulty report · Check Valve · Dhav DHC8201

Difficulty date
May 18, 2004
Submitted
November 15, 2004
Operation
Air carrier
Aircraft
N989HA
Make and model
Dhav DHC8201
Aircraft serial
427
Aircraft time
19,852 hours, 22,833 cycles
Part
Check Valve
Part number
DSC4871
Condition
Inoperative
Location
Nr 2 Hyd System
Stage of operation
LD
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

THE AIRCRAFT LANDED IN PHX WITH NO HYDRAULICS IN THE NR 2 SYSTEM. MX MOVED THE AIRCRAFT TO THE HANGER AND FOUND THE AFT EQUIPMENT BAY COVERED IN HYD FLUID. IN THE PROCESS OF TROUBLESHOOTING THE PROBLEM. MX REPLACED THE NR 2 SPU PRESSURE MON CHECK VALVE AND REPLACED NR 2 HYD SYSTEM PIPE ASSY AT RT WING ROOT.