FO2, qte` ..or you have a leak`...-or you have a blockage..??
Assuming you have neither,then the next caption is `eng fail`..
In most other helos and fixed wing (1-4 engines) ,it is usual practice to turn on the `booster` for t/o,ldg,and other conditions requiring high power/high workload,and only turn them off when in a safe condition,power reduced/cruise/safe height; then,if there has been an EDP failure,it is not so dramatic an event.
So ,you are reliant upon the EDP to do all the work at all the critical points of t/o,hover/lo speed/app. and landing....
I know you`ll say `that`s the ECway,in the ACM,taught in G/school,extra wear,etc,but surely you must have thought about it....and if you have,have you challenged it..?
After all,EC say/imply the `transfer` pumps are automatic,so there should be no reason to turn off ,unless the main tank is really dry....If this is incorrect/for media , then it should be challenged robustly.
On operating the A/P ;on engagement of `height hold`,is there a `manoueuvre` button on the collective to allow for short term transient height changes /power
changes.? Same for height hold disengagement..? If the lever is moved down,against any friction,and then released, will the collective move up again to restore the original datum...? ie series actuators or series/parallel..?