We lined up on 19, the holding point being conspicuous as it was a huge patch of stinging nettles. Peter (the pilot) lowered full flap, then tripped the circuit breaker which gave him the extra flap, then it was full throttle against the brakes, yoke hard back, release brakes and it rotated after about 50yd, then check forward and climb away retracting the flaps slowly.
Surely the extra flap was for landing not take off?