Originally Posted by
snl13
I think he meant that when you go on V/S plane will keep ROD and speed could keep increasing during descent if you ask for too much v/s, and go faster than atc/company restrictions. Whereas in OP DES ROD will reduce to try to maintain the desired speed.
That used to be called airmanship and managing the platform in my day. The FCTM stated 250kt/ 9000 feet above the airfield at 30nm. When I first started flying Airbus every approach was meant to be a decelerated approach and taking flap as soon as you got to target speed as long as you were on the profile. The FCTM seems to have taken out some of this info but it states that the typical descent is based upon n FPA of 2.5degrees.