It's pretty common. I don't fly retractable gear aircraft, but I did spend several months exclusively flying a Citabria. On my first flight back in a more typi

It's pretty common. I don't fly retractable gear aircraft, but I did spend several months exclusively flying a Citabria. On my first flight back in a more typical Cessna 172, I went through the downwind, base, and final legs as usual. After landing and getting the plane stopped, I turned to my instructor and commented that the landing sight picture seemed a lot steeper than what I had remembered. He smiled and pointed to the flap switch, which I had completely forgotten about. The Citabria doesn't have flaps.