And the radalt may just show a positive increase during rotation (because the antenna are forward of the wing leading edge) with the mains still on the ground.
And, I've had enough people call "positive rate" with the altimeter indicating an altitude less than that at the start of the takeoff run, to know they're not really seeing any true indication that we're climbing.
Last edited by Capt Claret; 17th Aug 2012 at 01:01.