What are the chock times for out and back missions?

The chock times for out and back missions refer to the total time allocated for a flight crew from the moment they start preparing for departure until they return and secure the aircraft. In this context, the appropriate chock time allows for thorough mission planning, flight performance, and any potential contingencies that may arise.

Choosing a chock time of 4+30 reflects both the need for sufficient flight duration and reserves while considering operational limits and requirements. This period provides the crew enough time for pre-flight and post-flight procedures while also accommodating the flight itself and any necessary considerations for turbulence, weather changes, or unexpected delays during the mission.

Completing an out and back mission in 4+30 ensures that the flight can be conducted safely and efficiently, adhering to the maximum allowable flight time within regulations. Other options may exceed necessary time or not provide enough leeway for safe operational standards.