条じょう件けん付つき運うん航こう

noun

conditional operation; provisional departure

Used mainly in aviation and maritime contexts for a flight or voyage that departs with the understanding that it may be diverted or return if weather conditions worsen. Often seen in announcements and operational notices.

• 台たい風ふう接せっ近きんのため、本ほん日じつの便びんは条じょう件けん付つき運うん航こうとなります。

  Due to an approaching typhoon, today's flight will be operated on a conditional basis.

• 条じょう件けん付つき運うん航こうでは、現げん地ちの天てん候こうが回かい復ふくしなければ引ひき返かえすこともあります。

  With conditional operation, the aircraft may return if the weather at the destination does not improve.