Definition
A flight in which the student pilot is the sole occupant of the aircraft, conducted under the authorization and supervisory endorsement of an authorized flight instructor.
Plain English
Flying the aircraft alone, with no instructor or other person on board, after your instructor has signed you off as ready.
Context Anchor
Seen in student pilot training when discussing the first flights made without an instructor in the airplane, including the skills that must be safe before that point.
Derivation
From the Italian solo, meaning 'alone,' originally a musical term for a passage performed by one player. In aviation, it carries the same idea: one person, performing the task on their own.
Why Pilots Care
It marks a key training milestone confirming the student can handle the aircraft safely without supervision.
Intuition Check
Solo flight does not mean a student can go fly alone whenever they feel ready. In training, it means flying alone only after the instructor has approved it and within the limits the instructor set.
Example Sentence 1
After several hours of pattern work, the instructor stepped out and signed the logbook, clearing the student for her first solo flight.
Example Sentence 2
After finishing the solo flight, the student logged the time and continued building hours toward the private pilot certificate.