Originally Posted by
framer
I quite often go down in VNAVSPD , do a manual change over from Mach to IAS and let the path wander above or below by a few hundred feet while the wind does its thing. As often as not it will be back on the profile by about FL 200 and it avoids the situation where you add thrust only to need speed brake two minutes later.
would it not be the same to just let it descend in VNAV PTH and let the speed wonder +- 5/10kts and then by then end the plane ends up on path on speed?