Which term describes the authorization given to an aircraft to depart?

• A. Flight plan
• B. Departure clearance
• C. Flight directive
• D. Taxi authorization

Answer: (B)

The term describing the authorization given to an aircraft to depart is "departure clearance." This clearance is a critical communication from air traffic control that grants the aircraft permission to start its takeoff sequence from the runway after it has been properly sequenced and is ready for departure. The departure clearance includes important information such as the assigned departure procedure, departure routing, and the squawk code for transponder usage, ensuring that the aircraft operates safely within the air traffic control system.

Other terms provided in the choices refer to different aspects of flight operations. A flight plan is a formal document filed with the relevant authorities that outlines the intended route and details of the flight but does not itself authorize takeoff. A flight directive generally refers to any official guidance that could encompass a wide range of operational updates or procedures but does not specifically indicate departure permission. Taxi authorization is relevant for aircraft movement on the ground leading to the runway but does not equate to permission for takeoff. Understanding these distinctions is crucial for effective communication and operations in an air traffic control environment.