Several years ago, I posted here my adventures of using my "escape hatch" after one of my "door latch lock screws" unscrewed itself enough to let the lock slip and locked me and my faithful hound inside my FWC. That said, it was not in itself hard to push out the window, the problem was letting myself out the window and then down to the ground. I was lucky in that there was another camper in the area, who heard my yells for help and put a chair under the escape hatch so I could more easily step down to the ground. To complicate matters I had just had one of those "noninvasive back operations " and this was the first time my doctor had let me out to play as long as I was careful. Anyway it worked, however while opening up the door was not that bad, unscrewing the lock, fixing it and reassembling everything was a different story by myself (the other camper by then had left).
Smoke
I should note here that many of us began to check and tighten up the lock screws as a part of our usual maintenance SOP's after I posted this adventure!.