An elderly man with glasses, a red ball cap and backpack is standing in front of an open doorway.
the man is flying a plane
A person cannot stand in a doorway and fly a plane. Planes are flown in the sky
A man does not have to be elderly.  If an elderly man is not standing in front of an open doorway the man is not flying a plane.
Flying a plane is done in a seated position and the first man is standing.