Actually, you generally have to "preheat" small single engine planes with an
electric heater when they get below a certain temp.
Many hangers are unheated. You throw a blanket over the cowl and duct in to
the front cowl openings a forced electric heater.
And yes, the FAA has little humor, especially these days.
One of my favorite pilot shirts I seen said: "Hello, I'm with the FAA and I
am here to help you"
And the FAA has no sense of humor.
When I was in college I remember being told that when starting a plane in
cold weather it is required to pull the plane in the hanger and warm up the
oil since they use single grade oils. I suspected that this was still the
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