Hughsey,
I tried to get had back by hitting the accumulator dump switch but nothing occurred!
Finally after a wild ride he hit the hyd test switch and we got hyd back!
Ok, it would not be the first time this training procedure has been done incorrectly! The check airman should know this very well before he can do a flight check imho, but some just think they know...... which is not enough.
The other part of your story, seems there was no briefing of the manoeuvre, as to transfer of controls if things go pear shaped. It is not a good scenario if 2 guys wrestle each other HYD off, and to top it off with no load compensator.. Amazing you did not crash, really.
Airbus came out with a mod a while ago addressing the issue with the HYD test button being used incorrectly for training. Post mod, the HYD caption will blink and therefore you get the GONG repeatedly instead of one time as it did pre mod. This is a direct result of training crashes and incidents.
I personally know a pilot which has part of the ''honour'' for this mod to be put in place. That happened due to 2 pilots (none being instructors) being clever, and wanted to use a ferryflight to do some ''training'', and ended up on the side with a brand new machine, with the HYD-test button still depressed.
Crab,
The belts installed now is a different type than the ones that used to fail, which probably came from a Citroen or a Renault in the 70's....
On the DUAL Hyd machines there is a MGB driven pump, but that reduces the TBO of the MGB with 1000 flight hours.