Canopy opening in flight

If you have a lifting instrument panel on a forward hinged canopy, you might not notice until you land.

I saw an L-33 written off landing without spoilers because the pilot was holding the side opening canopy closed. He sideslipped it to a good position, but should have changed his hand to the spoiler handle by 50 ft.

Of course a sideslip to the hinge side would have kept the canopy down.