Jwscud
even on takeoff same situation exists. There's another accident that happened in India in 1977 on B737 200. When takeoff flap was selected the leading flap didn't extend. That time there was no indication/warning for leading edge flap. So the rotation speed by default became inadequate. At VR the aircraft got airborne in ground effect but was unable to climb out of it. It crashed at the end of the RW killing some workers on ground and aircraft was written off. If flap is retracted in GA at 50ft before established in flight path, thrust and speed it will have the same effect.