Finally dug up my old Unlimted X-Men #1 from '93 or so..
Cyclops, Professor X, and Storm are all flying over the Antarctic when Siena Blaze (!) uses her mutant power on the ground for the 3rd time ever in her life, causing the Blackbird to crash.
What follows is a survival tale with the 3 X-Men battling the elements to stay alive, and they are all handicapped in some way or another. Prof X loses his wheelchair, Scott loses his ruby quartz visor, and Ororo is found to have a profound connection with the torn Earth (result of Siena Blazes power).
I rememeber reading this as a kid and thinking Cyclops and Storm hooked up in this scene:
Also, gotta love the casual sexism of Kazaar...