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https://quizvds.it/en-en/quiz/bpl-hot-air/navigation/343/aircraft-travels-minutes-ground-speed-gs-equals
An aircraft travels 100 km in 56 minutes. The ground speed (GS) equals... - Hot Air Balloon Exam...
Navigation - BPL Hot Air - Balloon Pilot License Hot Air - An aircraft travels 100 km in 56 minutes. The ground speed (GS) equals... - 343