Service difficulty report · Selector Valve · Bombdr DHC8400

Difficulty date
June 10, 2010
Submitted
January 4, 2011
Operation
Air carrier
Make and model
Bombdr DHC8400
Engine
Pwc PW150A
Propeller
Rotol CR4086123F17
Part
Selector Valve
Part number
483003
Condition
Leaking
Location
Mlg
Stage of operation
AP
How discovered
O
Nature of condition
K
Precautionary procedure
O

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

What was found

ON FINAL APPROACH, AFTER SELECT MLG DOWN, HOWEVER THE GEAR STAYED IN UP POSITION. DUE TO INSUFFICIENT TIME TO PERFORM LANDING, MISSED APPROACH PROCEDURE HAS BEEN PERFORMED. NO NORMAL L/G EXTENSION. PERFORMED MANUAL EXTENSION ACCORDING TO EMERGENCY PROCEDURE. LG SELECTOR VALVE REPLACED IAW AMM 32-31-06-000-801 AND 32-31-06-400-801. FUNCTIONAL TEST OF THE LG EXTENSION AND RETRACTION SYS PERFORMED IAW AMM 32-31-00-720-801 AND FOUND OK.