Under what condition can an aircraft begin takeoff from a displaced threshold?

When considering the conditions under which an aircraft can begin takeoff from a displaced threshold, it's important to understand the purpose of a displaced threshold. A displaced threshold occurs when the usable runway length is effectively limited, usually due to obstacles or other operational considerations. However, it is crucial to note that while the displaced threshold typically reduces the length of runway available for takeoff in the intended direction of aircraft movement, it can be used under certain conditions.

In this case, taking off in the opposite direction from a displaced threshold is permissible because the primary reason for the displaced threshold is usually based on runway obstructions or safety measures in the area where the threshold is displaced. If takeoff is initiated in the opposite direction, the runway beyond the displaced threshold is available for use, allowing the aircraft to safely commence takeoff without being hindered by the restrictions associated with the threshold itself.

Other options do not align with the operational rules related to displaced thresholds. For instance, performing a touch-and-go or requiring instruction from air traffic control (ATC) is not relevant in this context, as these actions pertain to specific procedures that do not directly concern the inherent capabilities of safe takeoff from a displaced threshold. Moreover, the assertion that displaced thresholds cannot be used for take