3 ms·Or if you have a laptop on the tray or your knees. It gets jammed and could break.by jimktrains2 9y agoOr if you have a laptop on the tray or your knees. It gets jammed and could break.saboot 9y agoI never use my main work computer (15") on flights for this very reason.jghn 9y agoThis almost happened to me. My screen got caught on the lip and started to flex. I barely managed to get them to stop in time