What is the correct procedure to initiate a quick stop in a helicopter?

The procedure to initiate a quick stop in a helicopter effectively involves lowering the collective pitch and applying aft cyclic. By lowering the collective pitch, the pilot reduces the amount of lift generated by the rotor blades, which helps in decreasing the helicopter's altitude and forward momentum. Simultaneously, applying aft cyclic shifts the rotor disk's angle, which increases the drag on the helicopter and effectively slows its forward motion.

This coordinated action allows the helicopter to transition from forward flight to a near hovering position more efficiently. It's essential in situations where the pilot needs to make a sudden stop, whether due to an obstacle or the need to quickly land. This technique is key for improving the safety and control of the helicopter during flight operations.