The first JP trip on our CFS course was on the mighty JP3; no probs for most of us, but the Harrier mate took a while to get airborne. The QFI gave him control for t/o; Harrier mate goes full throttle, releases brakes and then slams tbrottle to idle. "WTF" goes QFI; Harrier mate replies "Well, I released the brakes and nothing seemed to be happening......"