george wrote in

m:

A number of aircraft that I've flown do not have flaps and the
sideslip was an everyday common maneuver .
I found the practice was frowned upon in the modern aircraft as
there were claims that the elevators were shielded and all manner
of problems could develop


The only one I've seen with that notation was the Cessna. It wasn't
prohibited but the plane seemed to slightly porpoise when you did it.

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