Plain English Meaning
After the flight, the instructor and student sit down together to go over how the lesson went, what was done well, what needs work, and what comes next.
Full Definition
A structured review conducted by an instructor with a student after a training flight, in which the student's performance is critiqued against the lesson's completion standards, strengths and weaknesses are identified, and the next steps in training are discussed.
Context Anchor
Used in flight training after the airplane is parked and the lesson is complete, usually before the instructor and student separate for the day.
Derivation
From 'post' (Latin, meaning 'after') and 'flight,' combined with 'evaluation' (Latin 'evaluare,' to determine value). Literally, 'judging the value of what happened after the flight.'
Why Pilots Care
It turns each flight into a deliberate experience and reduces the chance of repeating the same on the next lesson.