Originally Posted by
FlyingFlight
TBF, on a PW NEO engine, the thrust lever can remain at idle during the crossbleed engine start, so there will be no “temptation” of reducing trust, as you won’t be able to, and on a CEO you can’t do SET without the APU running due to the engine fire suppression system not working correctly in case of emergency electrical configuration on the ground. And usually the company will have more information than the pilots on how much things cost, so if they’ve implemented a procedure, it is probably worthwhile.
For the CEO it depends. If the CEO is retrofitted for single engine taxi without APU it can do the 2nd engine start without APU as well. The orange bunch has done it on nearly if not all of their CEOs for example. Saves some fuel on taxi in.