Service difficulty report · Hose · Dhav DHC8*

Difficulty date
January 10, 2011
Submitted
March 15, 2011
Operation
Air carrier
Make and model
Dhav DHC8*
Engine
Pwc PW610FA
Propeller
Hamstd 14SF7
Part
Hose
Part number
DSC252B40124
Condition
Ruptured
Location
Hyd System
Part time
34,847 hours
Stage of operation
AP
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

NR 2 HYD ISO VALVE AND ROLL SPOILER OUTBOARD HYD CAUTION LIGHT CAME ON DURING APPROACH. ALTERNATE NOSE GEAR EXTENSION PERFORMED. REPLACED HOSE TO DRAG STRUT ACTUATOR IN NOSE WHEEL WELL. DUE TO THE INCREASED FAILURE RATE OF PN DSC252B4-0124 OPERATOR WILL START A HOSE REPLACEMENT PROGRAM WHICH WILL INCLUDE REPLACEMENT OF THIS PN ON TIME BASIS. THIS WILL ENSURE THE RELIABILITY OF THE NOSE LANDING GEAR HYDRAULICS SYSTEM.