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Thread: When does FMC command aircraft to slow down?
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Old 12th Apr 2018, 07:52
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extricate
 
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Originally Posted by JammedStab
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.
Exactly, that was what I faced, it seems to me that FMS starts decelerating at the very last moment when i'm about to intervene.. I've asked around, it seems to be that FMS starts decelerating about 1.5nm per 10kts prior to the waypoint?

Any thoughts?
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