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

    time and hasten the drift of the downwind vortex toward another runway. (See FIG 7-4-6.) Similarly, a tailwind condition can move the vortices of the preceding aircraft forward into the touchdown zone. THE LIGHT QUARTERING TAILWIND REQUIRES MAXIMUM ... aircraft upwind from their approach and takeoff flight paths. (See FIG 7-4-7.) Vortex Movement in Ground Effect - Tailwind…

  • Chapter 11: Aircraft Performance › Takeoff and Landing Performance › Takeoff Performance

    allow the aircraft to reach the lift-off speed at a lower groundspeed, while the effect of a tailwind is to require the aircraft to achieve a greater groundspeed to attain the lift-off speed. A headwind that ... percent of the takeoff airspeed reduces the takeoff distance approximately 19 percent. However, a tailwind that is 10 percent of the takeoff airspeed increases the takeoff distance approximately 21 percent. In the case where the headwind speed is 50 percent…

  • Chapter 14: Transition to Tailwheel Airplanes › Taxiing

    times, so holding the stick away from the crosswind is good practice (left aileron in a right quartering tailwind). Elevator positioning in tailwinds is a bit more complex. Standard teaching tends to recommend full forward stick in any degree ... tailwind, arguing that a tailwind striking the elevator when it is deflected full down increases downward pressure on the tailwheel assembly and increases directional control. Equally important, if the elevator were to remain deflected up, a strong tailwind…

  • Chapter 13: Transition to Multiengine Airplanes › Performance and Limitations

    climb, climb gradient is affected by wind. Climb gradient is improved with a headwind component and reduced with a tailwind component. Figure 13-5A. Accelerate-stop distance and accelerate-go distance. Figure 13-5B. Climb gradient…

  • Chapter 7. Safety of Flight › Section 6. Potential Flight Hazards › 7-6-8. Use of Runway Half-way Signs at Unimproved Airports

    runway. In addition, this technique does not take into account the effects of upslope or tailwinds on takeoff performance. These factors will also require greater acceleration than normal and, under some circumstances, prevent takeoff entirely. d. Use of this “rule…

  • Chapter 4. Air Traffic Control › Section 3. Airport Operations › 4-3-17. VFR Helicopter Operations at Controlled Airports

    DEPARTURE/DEPAR TURE ROUTE (number, name, etc.).” Unless requested by the pilot, downwind takeoffs will not be issued if the tailwind exceeds 5 knots. 2. Pilots should be alert to wind information as well as to wind indications in the vicinity…