B744 A/P in V/S during turbulence

[JammedStab]

Originally Posted by 8che

Jammedstab

Think about it. Whats controlling airspeed in the Climb ? Pitch. So turbulence/speed variation can only result in further pitch changes.

Go to V/S and speed control is now instantly (and more accurately)controlled by throttles. Additionally pitch changes are reduced to almost zero resulting in a far smoother and stable ride.

exactly the same for descent if you started in FLCH or VNAVSPD. In descent if you lose airspeed with these modes while in turbulence how are you going to recover ? Increase thrust...nope. V/S mode is the answer.

Thanks. Forgive a silly question but what about if in VNAV PATH on descent?