A320 Dual Engine Fail
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A320 Dual Engine Fail
I have question about A320 dual engine fail.
after APU started, can we use Yellow HYD pump to supply Green and Yellow system. in case yes, can we use auto pilot after that, why airbus not mention about this ?
after APU started, can we use Yellow HYD pump to supply Green and Yellow system. in case yes, can we use auto pilot after that, why airbus not mention about this ?
Only half a speed-brake
The output of the yellow elec pump is grossly insufficient to run Y plus via the PTU G. Also not enough to run Y with loads. Numbers were mentioned once here on PPRuNe.
At wind milling speeds, true, there will be actually enough pressure on both Y and G from EDPs. Dual ENG does not give you dual HYD with it. Luckily.
So probably, it is the electrical configuration that does not permit AP use, by design. I.e. on purpose and for some very good reason.
My 2c, cheers.
At wind milling speeds, true, there will be actually enough pressure on both Y and G from EDPs. Dual ENG does not give you dual HYD with it. Luckily.
So probably, it is the electrical configuration that does not permit AP use, by design. I.e. on purpose and for some very good reason.
My 2c, cheers.
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With dual Engine flame out aircaft will be in EMER ELEC alternate law. So no AP. If you remain in it for five minutes then IR2 and IR3 is not supplied for rest of the flight, will stay in alternate law. Even if you start an engine AP will not be available.
Last edited by vilas; 13th Jun 2020 at 10:07.
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I assume those is in the systems description of the FCOM and I overlooked it? I’ll have to do some reading today.
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