Morgans wrote:

Is there some way with existing technology, that a pilot could alert ground
personnel that he is on takeoff roll?

I have a system that has always worked for me but would not be universal. So
far, every time I've been cleared for takeoff, I've been sitting at the
hold-short line, ready to go. When I acknowledge the takeoff clearance, I add
the word "rolling" to the end -- as in "3162 Kebec, rolling."

As I understand this situation, though, one aircraft had already been cleared
for takeoff after another one. In that case, the clearance for that aircraft
would be issued some time before the aircraft actually starts the takeoff run,
so it would not be appropriate for the pilot to say he's taking off.

George Patterson
Drink is the curse of the land. It makes you quarrel with your neighbor.
It makes you shoot at your landlord. And it makes you miss him.