Although you can fly and approach with a simulated main control failure by using the doors for yaw and the trimmer for pitch. Mind you that wasn't in the POH either.
However using the open doors to sail backwards in a floatplane
is in the book!
(OK, maybe not the POH, but it's in the text book.)
The key thing is not to panic. When something goes wrong or unexpected, unless you're on fire ... the first thing to do is sit on your hands and think about what you're going to do.
Yes. And just because the cabin suddenly fills up with a burning smell this does
not necessarily mean you're on fire - it
might just mean that you've accidentally pulled the cabin heat knob (which, it being the middle of summer, hasn't been used for months) rather than the cabin air knob.
Remembering having read about a pilot who killed herself by misdiagnosing a burning smell as an engine fire and shutting down the engine unnecessarily, I didn't touch anything until I'd thought about it for a bit ... which gave me time to work out what the problem was.