Who is responsible for the pre-takeoff briefing of passengers about seat belt usage?

The pilot in command is responsible for the pre-takeoff briefing of passengers regarding seat belt usage because the pilot holds ultimate authority and responsibility for the safety of the flight. During pre-flight procedures, it is essential that the pilot communicates crucial safety information to passengers, which includes instructions on seat belt use, emergency procedures, and any relevant safety protocols. This ensures that passengers are fully informed and can comply with safety regulations before the aircraft takes off. The pilot's role encompasses overall flight operations, including safety briefings, making their responsibility in this context paramount.

While other personnel, such as flight attendants, are integral in conducting these briefings and enhancing the passengers' awareness of safety protocols, the final command and accountability rest with the pilot in command. It's also noteworthy that while passengers play a crucial role in adhering to the safety instructions, they are not responsible for delivering or conducting the briefings.