This video footage is from a test flight conducted on 9 September 2010 at Jirnsum, Province of Friesland, Netherlands. It was recorded by a GoPro video camera mounted on the left tip of the inflatable wing, looking at the right wing tip. The kite power system was equipped with a Mutiny V1 kite of 25 m2 wing surface area and a radio-controlled improvised kite control unit. In this flight the wing collapsed 9:34 min after launch (60 s into this video excerpt), during the reel in phase, subsequently descending to the ground, in a collapsed state. The reel in phase starts at 40 s into this video excerpt. Between 40 and 50 s, the indentations in the center of the wing become more and more prominent, indicating that the relative flow is impining on the suction side of the wing as a result of a negative angle of attack. Between 50 and 60 s into the video the indentations intensify and the wing increasingly flattens. At 60 s, the entire wind buckles and decends in a spiraling motion. The entire decent, from wing collapse until ground impact, took about 40 s. The event was video recorded simultaneously by a GoPro video camera mounted on the swivel head of the ground station.