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(plural maiden flights) The first flight of an airplane or other airborne vehicle, usually used to test or demonstrate the functions of the systems. The manufacturer's CEO was confident enough to ride as a passenger on the airship's maiden flight.
A mainline flight is a flight operated by an airline's main operating unit, rather than by regional alliances, regional code-shares or regional subsidiaries.otes: 1 Wholly owned subsidiaries with separate operating certificates flying regional jets under the regional branding. 2 Branding used for regional feeder service and commuter flights. Operated either by a regional subsidiary or under contract by an independent regional airline.