One of the faults with this plane is that to taxi on a hot day, you need to put the canopy open. If a gust catches it, it goes full open, breaking the struts and then the plexiglass and the prop. Ruins your whole day. This is a prop open latch that lets you have fresh air for tsxii - and keeps the canopy from going open! I am not sure what happens if you take off in this position, but I will probably find out.