Plain English Meaning
Everything a pilot does after landing to properly close out the flight — parking the aircraft, shutting it down, locking it up, writing down what needs to be written down, and (in training) talking through how the flight went.
Full Definition
The actions a pilot performs after a flight is complete, including taxiing clear of the runway, shutting down the aircraft, securing it, completing required logbook and maintenance entries, and conducting a debrief or review of the flight. In a training context, postflight procedures also include the instructor's assessment of the student's performance and discussion of what went well and what needs work.
Context Anchor
Seen in checklists, flight training lessons, , and instructor assessment items after the flight is complete.