trial episode made to sell a television series
A television pilot (also known as a pilot or a pilot episode and sometimes marketed as a tele-movie) in United Kingdom, Ireland and United States television, is a standalone episode of a television series that is used to sell a show to a television broadcaster or other distributor. A pilot is created to be a testing ground to gauge whether a series will be successful. It is, therefore, a test episode for the intended television series, an early step in the series development, much like pilot studies serve as precursors to the start of larger activity.
A successful pilot may be used as the series premiere of a new show, or as a later episode, though some are never aired at all. Some series are commissioned straight-to-series without a pilot (although an increasing number of such series have their first episodes titled "Pilot"). On some occasions, pilots that were not ordered to series may also be broadcast as a standalone television film or special.
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