What is the proper angle to approach the LUH-72A with engines running?

The correct approach angle for the LUH-72A with engines running is a 45-degree angle from the front. This angle is crucial for maintaining safety while approaching the helicopter, as it allows an operator to stay clear of the main rotor blades, which typically have a wide arc of movement. Approaching at a 45-degree angle provides better visibility of the cockpit and the crew, enabling communication and ensuring all parties are aware of the situation.

Additionally, this angle minimizes exposure to the hazard areas of the helicopter while allowing the approach to be made safely by keeping a safe distance from the tail rotor. Other angles may either expose the person to greater risk from the rotor blades or reduce visibility when trying to assess the situation or communicate with the crew inside the aircraft. Therefore, the 45-degree angle is standardized for safety and operational efficiency when approaching a LUH-72A with running engines.