Blacmail -
maintenance related engine run up on rh engine". why was this done with normal crew & pax on board? normally this is performed on a remote clear area with qualified engineers on board & outside the aeroplane with airport authorities & atc authorisation & of course no pax .
Not strictly correct, if pax are onboard then the crew have to do it, or be in attendance should the a/c need to be evacuated, depends also on local airport rules, normally anything above idle would require a tow to a remote stand or egr bay, with no pax and most likely not the crew.
the only time crew must make a run up is during winter ops in icing conditions
Not true either, our SOP allows us to do it, anti ice is required any time visible moisture is present and OAT less than 10C.
Sympathies to those affected.