The term 'copilot fly without a' can be solved by the crossword solutions of SOLO (4 letters), HAN (3 letters), and GLIDE (5 letters). SOLO is an acronym for 'single-pilot operation', which means that a single pilot is responsible for the operation of an aircraft. HAN stands for 'hand flying', which is when a pilot manually controls the aircraft instead of relying on autopilot. Finally, GLIDE is a type of flight where the aircraft is not powered by its engines, but instead relies on the lift generated by its wings to stay in the air.