B line stall parachute.

In B line stall the second set of risers from the leading edge front the B lines are pulled down independently of the other risers with specific lines used to initiate the condition being responsible for its name. This puts a crease in the upper surface of the wing, thereby destroying the laminar flow of air over the aerofoil. This reduces the lift produced by the canopy and thus induces a higher rate of descent. The B line stall should be initiated with the wing in normal flight, no speed bar, not accelerated. Grasp the B lines on both sides above the line links and pull them down. There is no need to release the brake toggles while B stalling. The pilot may have to pull on the B lines with sufficient force to almost lift themselves out of the seat to get the wing to crease. Once the crease is in, it requires less effort to keep it in that, it does to initiate it. The sensation for the pilot when the B line stall is induced is that the breeze is upwards rather than in our face pulling the B lines even further down will not enhance the sink rate but can lead to a more unstable flight position. To recover from the B line stall release the B risers so that the aerofoil shape of the wing is resumed. This will normally be sufficient to resume normal flight but if the canopy remains in a stall push forward gently on the A risers to lower the leading edge of the wing and reattach the laminar airflow to the upper surface of the wing.