Plain English Meaning
Before flying, the pilot checks two things: the airplane is not too heavy, and the load is positioned so the airplane will balance properly in flight.
Full Definition
The calculation and verification that an aircraft's total loaded weight is within its certified limits and that the center of gravity falls within the approved forward and aft range for the planned flight. It accounts for the empty aircraft, fuel, occupants, baggage, and any cargo, using figures and arms published in the aircraft's weight and balance documents.
Context Anchor
A pilot encounters weight and balance during preflight planning, especially before carrying passengers, baggage, cargo, or a different fuel load than usual.
