The problem with FZRA, is the supercooled droplets strike the leading edge and RUNS BACK and freezes, mostly over the wing but also under. Being in FZRA even for say 15 sec's could cause a disastrous out come.
It is possible a pitch loss of control could proceed a large loss of lift on the main planes on some types of aircraft. An iced up elevator can play funny tricks.
Flying in FZRA, you are probably part of the icing, type test program.