VNE is based on true airspeed. It's usually determined by the flutter speed of the wings or some oth
VNE is based on true airspeed. It's usually determined by the flutter speed of the wings or some other lifting body. This leads to a service ceiling in ac called the 'coffin corner', since you can't fly slower than stall or faster than VNE and at some altitude those line converge since stall is airspeed and VNE is true
