CG Envelope

A chart in the POH that defines the approved range of center of gravity positions for a given aircraft weight. The envelope is plotted with weight on one axis and CG location (in inches aft of the datum) on the other, forming a bounded area within which the loaded CG must fall for the aircraft to be safe to fly. If the computed CG and weight plot inside the envelope, the loading is acceptable. Loading outside the envelope can result in an aircraft that is uncontrollable, unstable, or unable to recover from unusual attitudes.