初はつ飛ひ行こう

noun

maiden flight

Refers to the first flight of an aircraft, spacecraft, or similar vehicle. Often used in news or technical contexts.

• 新しん型がた旅りょ客かく機きの初はつ飛ひ行こうは来らい月げつに予よ定ていされている。

  The maiden flight of the new airliner is scheduled for next month.