IL.VIII.A.R2c

From the FAA library

• Pilot's Handbook of Aeronautical Knowledgep. 11-15
  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…

• Aeronautical Information Manualp. 7-4-4
  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…

• Pilot's Handbook of Aeronautical Knowledgep. 12-10
  Chapter 12: Weather Theory › Wind and Currents › Low-Level Wind Shear

  aircraft. It can rapidly change the performance of the aircraft and disrupt the normal flight attitude. For example, a tailwind quickly changing to a headwind causes an increase in airspeed and performance. Conversely, a headwind changing to a tailwind causes…

• Aeronautical Information Manualp. 7-1-51
  Chapter 7. Safety of Flight › Section 1. Meteorology › 7-1-24. Microbursts

  winds near the surface can be as strong as 45 knots resulting in a 90 knot shear (headwind to tailwind change for a traversing aircraft) across the microburst. These strong horizontal winds occur within a few hundred feet ... this is followed in short succession by a decreasing headwind component (2), a downdraft (3), and finally a strong tailwind (4), where 2 through 5 all result in decreasing performance of the airplane. Position (5) represents an extreme situation just…

• Aeronautical Information Manualp. 7-6-7
  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…

• Aeronautical Information Manualp. PCG S-12
  Pilot/Controller Glossary › T

  suitably equipped aircraft a continuous indication of bearing and distance to the TACAN station. (See VORTAC.) (Refer to AIM.) TAILWIND- Any wind more than 90 degrees to the longitudinal axis of the runway. The magnetic direction of the runway must…