747-400 Hydraulic Set Up
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Join Date: Jul 2002
Location: taiwan
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747-400 Hydraulic Set Up
I have a sim ride for an interview coming up (Not CX as the ban is on and there is no way I'm going to s**b) so could someone please let me know the set up of the hydraulic system in
1. sitting on the bay
2. pre-start
3. after start.
Many thanks ahead of time.
1. sitting on the bay
2. pre-start
3. after start.
Many thanks ahead of time.
Join Date: May 2002
Location: Australia
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From my own experience on the -400 I know that different companies have very slight variations on the hydraulic set up at certain times.
I'll move this over to Tech Log where I am sure you will get some useful information.
BlueEagle Moderator.
I'll move this over to Tech Log where I am sure you will get some useful information.
BlueEagle Moderator.
Last edited by BlueEagle; 8th Aug 2002 at 10:24.
Variations between companies depending on how many Aux pumps are fitted and requirements for electrical load minimising for engine start.
e.g. GE engines, 1 Aux pump on the No4 system, pre-start:1,2,3 ADPs to Auto, No4 Aux pump on; after-start: all ADPs to Auto.
GE engines, 2 Aux pumps, pre-start: 1 and 4 Aux pumps on, 2 and 3 ADPs to Auto; after-start: all ADPs to Auto.
RR engines, 2 Aux pumps, pre-start: 1 and 4 Aux pumps on, 2 and 3 ADPs OFF; after-start: All ADPs to Auto.
and so on...
e.g. GE engines, 1 Aux pump on the No4 system, pre-start:1,2,3 ADPs to Auto, No4 Aux pump on; after-start: all ADPs to Auto.
GE engines, 2 Aux pumps, pre-start: 1 and 4 Aux pumps on, 2 and 3 ADPs to Auto; after-start: all ADPs to Auto.
RR engines, 2 Aux pumps, pre-start: 1 and 4 Aux pumps on, 2 and 3 ADPs OFF; after-start: All ADPs to Auto.
and so on...
