plural of pilot valve

plural of pilot wheel

(aviation) An aviator who flies new and modified aircraft in specific maneuvers.

pilot light

plural of pilot lamp

A wheel, usually with radial handles projecting from the rim, for traversing the saddle of a machine tool, especially an automatic machine tool, by hand.

A proof of concept; an initial prototype.

(US, military, aviation) An aircraft that may be manned or unmanned, able to function in either mode without modification.

plural of back-door pilot

(film, television) A film, miniseries, or episode that serves as a proof of concept for a new full television series, but may be broadcast on its own even if the full series does not come to fruition.