The logic certainly escapes me. IMO, since it has been clear since Bacolod that lives can depend on it, the 'Retard' call should continue until BOTH levers are at 'idle.'
I agree with you, I think that logic is nothing but a flaw in the system's architecture. I also think that simply repeating the callout may be inefective, as sometimes these cues become ignored by the pilots in stress conditions. So if that was the choice, disregard my previous wording
, but introduce a
louder and stronger autocallout.
But if we are in an a/c that has active protections and uses fadec, then why not make it so that once 1 thrust rev is deployed, the other engine is commanded to idle. I cannot think of a situation in the ground when this action would not be desireable.