Flight school hurdle is a term used to describe the process of becoming a pilot. It involves passing a series of tests and exams, as well as completing SOLO flights and SOLO landings. The two crossword solutions for this term are SOLO (4 letters) and SOLOLANDING (11 letters). SOLO refers to a flight taken without any other pilots in the aircraft, while sololanding is the act of landing an aircraft without any assistance from another pilot.