In accordance with 22 CFR 121.8—

(1) A major component includes any assembled element that forms a portion of an end item without which the end item is inoperable. Examples of major components are airframes, tail sections, transmissions, tank treads, and hulls;

(2) A minor component includes any assembled element of a major component; and

(3) Examples of parts are rivets, wires, and bolts.