There is one contributor to the forum (he instructed me in 1973) who once had to "resolve an airborne situation" with heavy manual use of the cockpit fire extinguisher.
Some man had booked a sight-seeing flight for himself and his two children. Unknown to my instructor, this chap had just broken up with his wife and was mentally unbalanced. Once airborne he decided to take control and dive into the ground from height.
Thankfully, he didn't succeed due to very heavy bruising across the temple caused by close contact with the good old Chubb. Obviously, with two hysterical kids on board, the situation was not over until the aircraft was shut down on the ground and the keys were out.
