What does HAC stand for in aviation terminology?

HAC stands for Helicopter Aircraft Commander in aviation terminology. This term refers to the individual who has overall responsibility for the operation of the helicopter during flight and ground operations. The HAC is typically a pilot who has the necessary qualifications and experience to make critical decisions regarding the safety and performance of the aircraft. This role includes overseeing the crew, ensuring compliance with operational procedures, and addressing any in-flight issues that may arise.

The other terms do not accurately reflect the commonly accepted definition of HAC in the context of aviation. Understanding the specific roles and responsibilities of the HAC is essential for effective communication and operation within aviation environments, particularly in military or complex civilian operations.