Definition
The most forward location along the aircraft's longitudinal axis at which the center of gravity may legally and safely be positioned for flight. Loading the aircraft so the center of gravity falls ahead of this limit is prohibited because it produces excessive nose-heaviness, increased stall speed, reduced elevator authority, and potential inability to flare for landing.
Plain English
The furthest forward point where the airplane's balance point is allowed to sit. Load it any further forward than that and the aircraft becomes too nose-heavy to fly safely.
Context Anchor
Seen during weight-and-balance planning, especially when using the aircraft flight manual or loading chart before a flight.
Derivation
Forward refers to the nose-end of the aircraft. Limit comes from the Latin limes, meaning 'boundary.' Together the term names the boundary the balance point cannot cross toward the nose.
Why Pilots Care
A CG placed forward of this limit increases stability but can create heavy elevator forces, raise stall speed, and make rotation or flare difficult or impossible.
Analogy
Think of carrying a tray with most of the weight near one end. If the balance point moves too far toward that end, it becomes awkward to hold level. The forward center of gravity limit is the aircraft’s approved boundary before that nose-heavy condition goes too far.
Intuition Check
“Forward” does not mean the direction the aircraft is traveling. Here it means toward the nose of the aircraft within the allowed balance range.
Example Sentence 1
After adding two passengers in the front seats and a full fuel load, the pilot recalculated and found the center of gravity was still aft of the forward center of gravity limit, so the aircraft was safe to load.
Example Sentence 2
Loading too much weight in the forward baggage compartment pushed the CG past the forward center of gravity limit.