水すい平へい翼よく

noun

horizontal plane; horizontal stabilizer

Technical term in aviation and engineering for a horizontal surface or stabilizer, especially on an aircraft.

• 飛ひ行こう機きの水すい平へい翼よくは安あん定ていした飛ひ行こうに不ふ可か欠けつだ。

  The horizontal stabilizer of an airplane is essential for stable flight.