PROBLEM TO BE SOLVED: To provide an aviation business support device capable of supporting an aircraft to operate safely. An aviation business support device of an embodiment uses aircraft information, a first acquisition unit that acquires aircraft information including the position and altitude of an aircraft, a second acquisition unit that acquires core information about a rain cloud core, and aircraft information. The first determination unit that calculates whether or not the core exists in the determination area using the calculation unit that calculates the determination area in front of the aircraft and the core information, and generates warning information based on the determination result. And a communication unit that transmits alarm information to the outside. [Selection diagram] Fig. 2
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