Definition
The load factor imposed on an aircraft and its occupants during flight, expressed as a multiple of the force of gravity (G). At 1 G, the airplane and its occupants experience their normal weight; at 2 G, twice their weight; at 0 G, weightlessness; and at negative G, an upward push opposite to normal gravity. G-loading increases during maneuvers such as steep turns, pull-ups, and recoveries from dives.
Plain English
How heavy the airplane and everything in it feels during a maneuver, compared to sitting still on the ground. Pulling up sharply makes everything feel heavier; pushing over can make it feel lighter or even weightless.
Context Anchor
Seen in discussions of aircraft limits, steep turns, abrupt maneuvers, turbulence, and aerobatic or high-performance flying.
Derivation
The 'G' stands for the acceleration of gravity. 'Loading' refers to the load placed on the airframe and occupants. So G-loading literally means 'how many times the force of gravity is being loaded onto the airplane right now.'
Why Pilots Care
Exceeding design limits can damage the structure or cause loss of consciousness.
Analogy
It is like the heavy feeling you get at the bottom of a dip on a roller coaster. Your actual weight has not changed, but your body is being pushed into the seat harder for a moment.
Grounding Statement
In a level 60-degree banked turn, the airplane and pilot experience 2 G — everything feels twice as heavy as normal.
Intuition Check
G-loading does not mean how much baggage, fuel, or cargo is loaded into the airplane. It means the force placed on the airplane and its occupants by acceleration, usually described as 1 G, 2 G, 3 G, and so on.
Example Sentence 1
During the steep turn, the pilot felt the G-loading increase as the bank angle steepened.
Example Sentence 2
The airplane is certified for a maximum positive G-loading of 3.8.