Balanced/Unbalanced field length
I have searched the forums but cannot find any direct answer to my question. When you have worked out the V-speeds for a runway e.g. Vmcg 110, V1 130 Vr 135 V2 140, can you change the V1 speed up to 130 and down to 110 to make the field length unbalanced? If this is correct, is it left down to the pilots to alter the V1 speed, as I believe all speeds calculated from charts and FMC are balanced anyway? How far do you usually change the V speeds?
In the example I have used, if the rwy is very long and not ASD limited can you choose to increase the V1 up to 130 to lengthen the time on the ground incase of an emergency. Am I right in believing increasing the V1 you shorten the TOD, so this helps you clear any obstacles after approach in case of an engine failure.
Thanks for all your help.
Kristian
Last edited by Kristian17; 17th January 2006 at 19:27.