Originally Posted by
john_tullamarine
Scratching now but vaguely recall it was to do with autofeather and the subsequent need to do the manual followup actions within a timeframe to suit whatever system problem/limitation ..
There is a three minute time limitation on the feathering pump which I believe continues to operate after the autofeather sequence until the manual followup actions are complete.
Had no idea that this was the reason for a capped acceleration height, if true.