A320/321
On ground HYD EDP selected to OFF to check on another matter, notice HYD system remains pressurised at 3,000PSI??? Re-cycle and check C.B, still remains pressurised.
Cause : The HYD EDP Solenoid shut off valve fails to operate and remains open!
MEL raised (C) !
When asked what does one do in flight, when HYD SYS OVHT occurs? Airbus answer, "10x-9 and that the HYD box will overheat and shear off the HYD drive mechanism, with no further damage", when pressed for more info, nothing cameback.
Therefore, didn't take MEL! 4 hour flight over water at night, problem with this particular HYD system, could only become worse in flight! don't get paid enough money to take that one !