[QUOTEback to school, I think
. try post #5?][/quote]
The only speed effected by this is VR, but you still use the same V speeds, is a slow rotation allowed prior to reaching V2?
Corrections that must be made include tail winds, a + or - slope, those kind of things, V2 will of course follow a lower v/s.
To determine whether to use a bleeds on or off takeoff, you MUST include 4,000 Ib's to you actual gross weight. A bleeds on takeoff with the assumed method must also include this correction.
To determine whether to use the assumed temp method, refer to your flex temp gw column of the runway in use.
Many more corrections/factors need to be made before you can dtermine any further and make the decision.
I don't have any data regarding the 400, so I don't want to comment further. Besides I don't want the criticism.
James