String came detached from my chinagraph in a JP during basic training in the 60’s and fell onto the floor of the cockpit. It wouldn’t re-appear despite -ve G and rudder-trampling so I duly reported it and was invited to invert my body in the cockpit (after landing!) and look for it - to no avail.
Bombheads were not pleased at having to remove and replace the seat overnight but triumphantly presented me with a yellow chinagraph at met-brief the following morning, to a round of raucous applause. Cheering turned to groans when I told them that the one I had lost was, in fact, blue!
Mog