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JABBARA
19th Mar 2017, 18:17
When L/G is extended manually, even Green hydraulic is available, NWS is inop.
Just question about the reason, which one of the below is correct?

#1 Green Hydraulic for Nose wheel door actuator is shut at alternate extension sequence; same line feeds NWS, therefore NWS becomes inop
or
#2 Nose Wheel Door remains open and this prevents Nose Wheel Steering actuators movement, therefore NWS is deactivated.

Any idea or better explanation please

vs69
19th Mar 2017, 20:50
From looking in the AMM no.1 looks like the right answer there.