mutt-
In my -62 and -62F manual only, I find:
"Vmc Ground NORMAL - demonstrated with rudder pedal steering operating, with a positive push force on the control column."
"Vmc Ground ADVERSE - the benefit due to rudder pedal nosewheel steering is not incorporated." [and those speeds are the same as everyone elses]
It goes on to list the various environmental conditions for the use of each.
I can see some conditions where the shorter fuselage -62 models could benefit from a lower V1 min that wouldn't be necessary on the longer stretch versions of the DC-8.
I think that "demonstrated" means someone got a STC to use the lower speeds in certain conditions. I know we have shorter Landing Field Lengths than anyone elso flying the DC-8, because we have a STC for our fleet due to our demonstrating to the FAA that we can get the airplane stopped in shorter distances than the certification data in the AFM indicates.
Re: your testing on the 777. ROTFLMAF! But, mutt, you should know better than anyone that Murphy's law would reduce that to 40/60, or maybe even 30/70!
