When must passengers in an aircraft have their safety belts or safety harnesses fastened?

Passengers in an aircraft are required to have their safety belts or safety harnesses fastened during taxi, take-offs, and landings to ensure their safety and mitigate the risk of injury in the event of turbulence or unexpected maneuvers. These phases of flight are critical; for example, taxiing can involve sudden stops or changes in direction, while take-offs and landings have the highest risk of accidents due to the proximity to the ground and the need for control of the aircraft.

The emphasis on securing safety belts or harnesses during these specific times is grounded in aviation safety protocols, highlighting the importance of being properly restrained to enhance passenger protection. This is particularly vital given the potential for rapid changes in speed and altitude during these flight phases. By enforcing this requirement, regulatory bodies aim to minimize the risk of serious injury in case of an emergency, turbulence, or other unforeseen events.