Sport Pilot for Helicopter - Simplified Flight Controls › VIII. Emergency Operations › Task E. Vortex Ring State (VRS)

SH.VIII.E.R6

Risk management

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

Study note

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. 11-18
Chapter 11: Helicopter Emergencies and Hazards › System Malfunctions › Loss of Tail Rotor Effectiveness (LTE)
There are no extra parts in helicopters. The respect and discipline pilots…
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. 11-20
Chapter 11: Helicopter Emergencies and Hazards › System Malfunctions › Main Rotor Disk Interference (285–315°)
Main Rotor Disk Interference (285–315°) Refer to Figure 11-9. Winds at velocities of 10–30 knots from the left front cause the main rotor vortex to be blown into the tail rotor by the relative wind. This main ... rotor disk vortex causes the tail rotor to operate in an extremely turbulent environment. During a right turn, the tail rotor experiences a reduction of thrust as it comes into the area of the main rotor disk vortex. The reduction…