Which statement best describes the pre-departure timeline events?

• A. The order is check-in 60, crew brief 50, onboard 45, boarding 40
• B. The order is boarding 40, onboard 45, crew brief 50, check-in 60
• C. The order is check-in 60, boarding 40, crew brief 50, onboard 45
• D. The order is check-in 60, crew brief 50, boarding 40, onboard 45

Answer: (A)

Understanding the sequence of pre-departure activities is key to a smooth, safe operation. Check-in comes first because it confirms passengers, verifies identity, and issues boarding passes, establishing the passenger flow for the flight. After that, the crew briefing takes place so flight and cabin crew are aligned on the план, responsibilities, and safety procedures for this specific departure. Next, the aircraft is prepared and the crew boards to perform preflight checks and set up the cabin, ensuring the plane is ready before anyone else steps aboard. Finally, passengers begin boarding, allowing doors to close and the flight to push back on schedule. This order keeps safety and efficiency intact, because boarding occurs only after the aircraft and crew are ready, rather than before the preparation steps are complete.