Tuesday, May 26, 2009

Lost of main hydraulic pressure during flight

It can happen to loose rapidely the main hydraulic pressure system during flight. It can be a broken hydraulic line but usualy it is when you do negative G's and use the hydraulic system at the same time( ailerons boost or speed brakes). Most of the time the hydraulic pump cavitate.
If you follow the procedures .... it is good but it can take a long time and if you are short of fuel...
One procedure not descibed is to reduce the fouga at 140KTS and drop the gear down normaly.
The gear will come down slowly , will lock down and the main hydraulic pressure system will
go back up.
It will be faster than some procedures which tell you to wait 20 minutes.

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