bEN_
8th Mar 2014, 10:51
hi guys would like to know more from forum members regarding an issue i encounter recently.
aircraft type A321.
the aircraft had jacked up(flight configuration) during maintenance and during the landing gear retraction test, the PTU did not come on to pressurize the green hydraulic system . (aircraft yellow hydraulic electrical pump is being turn on and there's 3000psi on the yellow hydraulic system)
but when the de-actuactor is being installed on the aircraft to simulate aircraft on ground configuration, and with the yellow hydraulic electrical pump turned on the PTU activate and pressurized the green hydraulic system as normal.
i would like to know why it happened this way which some other people told me the PTU will be active even in flight config during the landing gear retraction test.
is this a fault condition or normal i could not understand. :ugh:
aircraft type A321.
the aircraft had jacked up(flight configuration) during maintenance and during the landing gear retraction test, the PTU did not come on to pressurize the green hydraulic system . (aircraft yellow hydraulic electrical pump is being turn on and there's 3000psi on the yellow hydraulic system)
but when the de-actuactor is being installed on the aircraft to simulate aircraft on ground configuration, and with the yellow hydraulic electrical pump turned on the PTU activate and pressurized the green hydraulic system as normal.
i would like to know why it happened this way which some other people told me the PTU will be active even in flight config during the landing gear retraction test.
is this a fault condition or normal i could not understand. :ugh: