Sport Flight Instructor Helicopter - Simplified Flight Controls › XI. Emergency Operations › Task D. Vortex Ring State (VRS)

FH.XI.D.R6

Risk management

Loss of tail rotor effectiveness (LTE), as applicable.

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Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Helicopter Flying Handbook p. 11-20
Chapter 11: Helicopter Emergencies and Hazards › System Malfunctions › Loss of Tail Rotor Effectiveness (LTE)
The key is not to put the helicopter in a compromising condition…
Helicopter Flying Handbook p. 11-20
Chapter 11: Helicopter Emergencies and Hazards › System Malfunctions › Tail Rotor Vortex Ring State (210–330°)
left, depending upon the wind direction. If the pilot allows a right yaw rate to develop and the tail of the helicopter moves into this region, the yaw rate can accelerate rapidly. In order to avoid the onset of LTE ... imperative to maintain positive control of the yaw rate and devote full attention to flying the helicopter. Tail Rotor Vortex Ring State (210–330°) Winds within this region cause a tail rotor vortex ring state to develop. [Figure…
Helicopter Flying Handbook p. 3-4
Chapter 3: Helicopter Flight Controls › Antitorque Pedals › Heading Control
Pressing on the left pedal has the opposite effect: the nose of the helicopter yaws to the left and the tail swings right. [Figure 3-6] With the antitorque pedals in the neutral position, the tail rotor has a medium ... positive pitch angle. In medium positive pitch, the tail rotor thrust approximately equals the torque of the main rotor during cruise flight, so the helicopter maintains a constant heading in level flight. A vertical fin or stabilizer is used…