maiden flight

Etymology
See.

Noun

 * 1) The first flight of an airplane or other airborne vehicle, usually used to test or demonstrate the functions of the systems.

Translations

 * Chinese:
 * Mandarin: 首飛
 * Finnish:
 * German:
 * Japanese: 初飛行
 * Polish: dziewiczy lot
 * Russian: пе́рвый полёт