747-400 Vmca vrs Vmcg

Date:         01 Mar 97 02:45:01 
From:         mike meddings <meddings@achilles.net>
Organization: Achilles Internet Ltd.
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Does anyone know which is higher Vmcg or Vmca on a 747-400 and why?
At first glance it would seem that Vmca would have to be yet the
regulations allow for the requirment that V1 >= Vmcg while Vr > 1.05Vmca
one is also allowed to have V1=Vr.

If anyone can point me in the right direction on this (no pun intended)
an e-mail to "meddings@achilles.net" would be appreciated.