When I took delivery of a new Cessna 182T last year, I did a test flight for certification purposes. During the test flight we had to perform a power off stall but that didn't go as planned as it was simply impossible to stall. What happened is this: when the airspeed dropped well below the power off stall speed we simply started to sink slowly with a nose-high attitude at about 35 KIAS. This "mushing" went on for what seemed ages before I eventually applied power and pushed the nose down to gain airspeed again. We tried it again after that and the same thing happened. I had an instructor with me who has thousands of hours in a C172 and he had never experienced something like this before.
The odd thing is that this only happened during that flight. During later flights this didn't occur anymore.
There was a passenger in the back seat, fuel tanks only half full so the CG was more aft than usual, but well within limits
Ever since that flight I've wondered:
- What could cause this to happen? (My guess is it is CG related)
And most importantly:
- If I would have continued this "mushing" flight, would it be possible to have entered a flat spin or a simple "drop out of the sky" like the infamous Air France 447?