What is the purpose of DR 164?

The correct answer is that DR 164 serves as the tailhook fairing door location. This designation is important because it provides a specific reference point for maintenance personnel and flight crews when they are inspecting, maintaining, or assessing the functional integrity of the tailhook mechanism on an aircraft. The tailhook is a critical component for landing on aircraft carriers, and understanding its location is essential for ensuring proper operation and safety.

The designation of access points for maintenance, tie-down points for securing the aircraft, or representations of control surfaces are relevant in the context of overall aircraft operations but do not specifically pertain to the defined function of DR 164. Tailhook systems require precise knowledge of their fairing doors to ensure repeated reliability in operation, especially during landing scenarios, making the understanding of this location vital for aircraft readiness and safety.