Originally Posted by
extricate
I get caught sometimes when there's a speed constraint at a waypoint and FMC doesn't slow down until we are very close towards it. So i'm wondering if there's a timeframe FMC will start slowing down so at least I know what the FMC is doing and not bust the speed constraint passing the waypoint.
It seems to do it at the last possible moment possible to just make the restriction by selecting idle. Usually just around the time that you are about to take overriding action seeing as it is at the latest possible moment that it starts to slow down.
Sometime though, the waypoint takes longer to change from magenta to white than one expects it will take.