SH.V.D.R5

From the FAA library

• Helicopter Flying Handbookp. 11-10
  Chapter 11: Helicopter Emergencies and Hazards › Vortex Ring State

  that are conducive to a vortex ring state condition are attempting to hover OGE without maintaining precise altitude control, and approaches, especially steep approaches, with a tailwind component. When recovering from a vortex ring state condition, the pilot tends first ... control may be limited. The traditional recovery is accomplished by increasing airspeed, and/or partially lowering collective to exit the vortex. In most helicopters, lateral cyclic thrust combined with an increase in power and lateral antitorque thrust will produce the quickest…

• Aeronautical Information Manualp. 7-4-4
  Chapter 7. Safety of Flight › Section 4. Wake Turbulence › 7-4-4. Vortex Behavior

  Vortex Movement Near Ground - with Cross Winds 5. Pilots should be alert at all times for possible wake vortex encounters when conducting approach and landing operations. The pilot is ultimately responsible for maintaining an appropriate interval, and should consider ... vortices can rise with the air mass in which they are embedded. The effects of wind shear can cause vortex flow field “tilting.” In addition, ambient thermal lifting and orographic effects (rising terrain or tree lines) can cause a vortex…

• Helicopter Flying Handbookp. 10-5
  Chapter 10: Advanced Flight Maneuvers › Steep Approach

  considered a steep approach. [Figure 10-4] Caution must be exercised to avoid the parameters for vortex ring state (20–100 percent of available power applied, airspeed of less than 10 knots, and a rate of descent greater than ... feet per minute (fpm)). For additional information on vortex ring state (formerly referenced as settling-with-power), refer to Chapter 11, Helicopter Emergencies and Hazards. Figure 10-4. Steep approach to a hover…

• 14 CFR Part 61 — Certification: Pilots, Flight Instructors, and Ground InstructorsOpen
  14 CFR § 61.77 Special purpose pilot authorization: Operation of a civil aircraft of the United States and leased by a non-U.S. citizen.

  Special purpose pilot authorization: Operation of a civil aircraft of the United States and leased by a non-U.S. citizen. State to the Convention on International Civil Aviation that contains the appropriate aircraft category, class, type rating, if appropriate ... instrument rating for the aircraft to be flown; (2) A certification by the lessee of the aircraft— (i) Stating that the applicant is employed by the lessee; (ii) Specifying the aircraft type on which the applicant will perform pilot duties…