Plain English Meaning
Choosing to move a lesson to another time because something today makes it unsafe or unproductive to fly.
Full Definition
The decision by an instructor or student to postpone a planned flight lesson to another date or time when a present condition — such as illness, fatigue, stress, poor weather, or aircraft unavailability — would compromise the safety or learning value of conducting it as scheduled.
Context Anchor
Used during preflight planning and go/no-go decisions, especially when weather, wind, visibility, heat, fatigue, or other environmental conditions may affect the lesson.