john
"On what basis do you stae that generally Vmca is less than Vmcg?"
The Boeing chart 'Air Minimum Control Speeds (One Engine Inoperative) in my 747-400 manual shows Vmca for 15 degrees C and a Pressure altitude of 0ft as 117 knots. The table for Vmcg for the same conditions shows 126 knots. Of course the FAA Vmcg figures may be lower.