SDR EIAA9610

Service difficulty report · Selector Vlv · Boeing 747273C

Difficulty date
May 4, 1996
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N471EV
Make and model
Boeing 747273C
Aircraft serial
20651
Part
Selector Vlv
Part number
366103
Condition
Failed
Location
Lt Mlg
Stage of operation
IN
Nature of condition
O
Precautionary procedure
K

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

What was found

MEL - DURING TAXI NR 1 HYDRAULIC SYSTEM DROPPED SUDDENLY. NO STEERING CONTROL. PUMPS SHUT DOWN WITHIN 10 SECONDS. LEFT BODY GEAR SELECTOR VALVE BODY FOUND SPLIT. SAME REPLACED PER MM 32-31-03. CHECKED NR 1 EDP AND ADP CASE DRAIN FILTERS, FOUND CLEAN. SERVICED NR 1 HYD SYSTEM. OPERATED NR 1 EDP AND ADP FOR 2 MINUTES AND CYCLED FLIGHT CONTROLS. RE-CHECKED CASE DRAIN FILTERS, FOUND CLEAN. BLED BODY GEAR NOSE SLECTOR VALVE AND CHECKED VALVE OPERATION PER MM 32-31-03. (M)