"Michael 182" wrote:

[...]
I'm not sure what you mean by "I just don't actively plan for this". Are
you saying that you regularly make flights where you don't actually know
the mileage or expected time enroute for the flight prior to takeoff?

No, I guess I overstated it. I do know both mileage and expected flight
time - but usually just for the whole route, not for multiple waypoints
enroute. [...]

Another way of saying this is that roughly estimating these quantities
in one's head can be accurate to (say) 25%, which is sufficient for
trips that don't have unusual risk characteristics. If the airplane's
endurance may get tight, or ground services iffy, then more formal
planning may be called for. But at least in my case, that is very rare.

You're making a lot of sense on this issue, Michael.


- FChE