Bkdoss
would it be OK to use the Yellow Electric Pumps to pressurize the yellow system and get out of dual hydraulic condition though the ECAM procedure doesn't suggest turning it ON?
When even with single yellow EDP fail and PTU inop ECAM suggests you to switch on the yellow electric pump, why would the ECAM with dual hydraulic fail not suggest it? did you check? The ECAM procedure is very logical. First thing, PTU or any pump can be on only if there is fluid, no overheat or reservoir low pressure. Between G and Y since the PTU does the job Y electric is not required. But if PTU is inop it will ask for Y electric pump. Then comes dual hydraulic. It will suggest to convert it to single hydraulic by switching on Y electric for G+Y (with PTU OFF as it cannot sustain both) and for G+B in case B elec pump fail will ask for RAT manual lowering. Only single B elec pump fail it will not ask for RAT manual as it cannot be retracted.