Plain English Meaning
It's the part of the lesson plan that covers everything the student needs to do on the ground before flying — checking weather, planning the flight, and inspecting the airplane.
Full Definition
In a training syllabus, a labeled lesson section listing the ground-based tasks a student must perform before each flight, such as obtaining a weather briefing, completing weight and balance, reviewing the planned lesson, and inspecting the aircraft. It identifies what the student is expected to accomplish on the ramp and in the briefing room before engine start.
Context Anchor
Seen in training syllabi, preflight briefings, checklists, and the time before engine start or .