Originally Posted by
Black Pudding
Y ELEC PUMP…OFF then ENG 1…. SHUT DOWN
Yes... but not so black and white. That is how it appears in the FCOM, however... what we often see is the PF setting the parking brake and then looking up and staring at the overhead panel waiting for the Y Elec pump to be switched off before returning their attention to shutting down Eng No1.
There should be no delay in shutting down the engine, in order to minimise risk of a roll forwards in the event of a brake failure, or to ground crew approaching the aircraft - both high risk, and not without fatal precedent.
Point being.. it doesn't really matter if the Y Elec pump is switched off before, simultaneously or after PF has shut down ENG 1, but many think that the order it's presented in the FCOM Normal Procedures means it has to be done before the Engine is shut down. May be better to consider the PF setting the parking brake is a trigger point for the PM to begin their shutdown flow..
Take a look at the Task Sharing:
PRO-NOR-TSK 00024929.0004001 "At parking position:"