Sport Flight Instructor Helicopter - Simplified Flight Controls › VII. Hovering Maneuvers › Task B. Hover Taxi

FH.VII.B.R5

Risk management

Hazardous effects of downwash.

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

Aeronautical Information Manual p. 4-3-22
Chapter 4. Air Traffic Control › Section 3. Airport Operations › 4-3-17. VFR Helicopter Operations at Controlled Airports
Examples would include IFR flights, avoidance of noise sensitive areas, or use of runways/taxiways to minimize the hazardous effects of rotor downwash in congested areas. 3. Because helicopter pilots are intimately familiar with the effects of rotor downwash, they ... respect to the specific airspeed/altitude combinations. ATC clearances are in no way intended to place the helicopter in a hazardous position. It is expected that pilots will advise ATC if a specific clearance will cause undue hazards to persons…
Helicopter Flying Handbook p. 9-10
Chapter 9: Basic Flight Maneuvers › Taxiing › Air Taxi
effects of rotor downwash in wheel-type helicopters. [Figure 9-11] Surface taxiing in skid type helicopters is generally not recommended due to the high risk of dynamic rollover; for more information, refer to Chapter 11, Helicopter Emergencies and Hazards…
Helicopter Flying Handbook p. 2-12
Chapter 2: Aerodynamics of Flight › Airflow and Reactions in the Rotor Disk › Induced Flow (Downwash)
Since the induced flow velocities are decreased, the AOA is increased, which…
Helicopter Flying Handbook p. 11-9
Chapter 11: Helicopter Emergencies and Hazards › Vortex Ring State
Common Errors 1. Failure to use sufficient proper antitorque pedal when power…
Aeronautical Information Manual p. 7-6-14
Chapter 7. Safety of Flight › Section 6. Potential Flight Hazards › 7-6-14. Flying in Flat Light, Brown Out Conditions, and White Out Conditions
This can also cause the pilot to make incorrect control inputs which…
Seaplane, Skiplane, and Float/Ski Equipped Helicopter Operations Handbook p. 9-3
TAXIING AND HOVERING
hover taxi to the destination. However, due to power limits, local restrictions, noise, water spray, or creating a hazard to other vessels or people, it may be necessary to water taxi the helicopter. To taxi in water, maintain full rotor ... allow the helicopter to roll in the trough. In some instances, increasing collective can produce enough downwash to create a slight smoothing effect on windproduced waves. A ground swell can be dangerous to the tail rotor while the helicopter…