What action should be taken if a flight crew member is unable to fasten their shoulder harness during critical phases of flight?

In critical phases of flight, such as takeoff and landing, the safety protocols require that all crew members are properly secured in their seats with their shoulder harness fastened. If a crew member is unable to fasten their shoulder harness, notifying the pilot is essential. This action is crucial as the pilot can make informed decisions regarding the safety of the flight and possibly alter the flight path, delay the departure, or take other appropriate measures to ensure the safety of all onboard.

Engaging the crew member in discussion allows for an assessment of the situation and consideration of alternative safety measures. This promotes a culture of safety and teamwork within the flight crew. Assessing the issue collaboratively ensures that all risks are considered and managed effectively.

Other actions, such as proceeding without the harness or waiting until it becomes comfortable, would violate safety protocols and increase risks during critical flight phases. Additionally, requesting assistance from another crew member may be necessary but should typically follow the protocol of notifying the pilot first to address the situation efficiently and with a clear understanding of the potential impact on safety.