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  • Chapter 14: Airport Operations › Wind Direction Indicators

    Wind Direction Indicators It is important for a pilot to know the direction of the wind. At facilities with an operating control tower, this information is provided by ATC. Information may also be provided by FSS personnel either located ... receive and broadcast on this frequency. When none of these services is available, it is possible to determine wind direction and runway in use by visual wind indicators. A pilot should check these wind indicators even when information is provided…

  • Glossary › Pilot’s Operating Handbook/Airplane Flight Manual

    desired track and the heading of the aircraft necessary to keep the aircraft tracking over the desired track. Wind direction indicators. Indicators that include a wind sock, wind tee, or tetrahedron. Visual reference will determine wind direction and runway ... lack of adequate navigation signal directly above the VOR station causes the needle to deviate. Wind shear. A sudden, drastic shift in windspeed, direction, or both that may occur in the horizontal or vertical plane. Zulu time. A term used…

  • Chapter 11: Aircraft Performance › Performance Charts › Sample Problem 10

    AFM/POH. The crosswind and headwind component chart allows for figuring the headwind and crosswind component for any given wind direction and velocity. Sample Problem 10 Refer to Figure 11-31 to solve this problem. First, determine how many degrees difference ... there is between the runway and the wind direction. It is known that runway 17 means a direction of 170°; from that subtract the wind direction of 140°. This gives a 30° angular difference or wind angle. Next, locate…

  • Chapter 14: Airport Operations › Nontowered Airport

    airports where there is no tower or FSS. On pilot request, UNICOM stations may provide pilots with weather information, wind direction, the recommended runway, or other necessary information. If the UNICOM frequency is designated as the CTAF, it is identified…

  • Chapter 10. Helicopter Operations › Section 2. Special Operations › 10-2-3. Landing Zone Safety

    wind in terms of the direction the wind is from and the speed. 3. Common natural sources of wind direction information are smoke, dust, vegetation movement, water streaks and waves. Flags, pennants, streamers can also be used. When describing ... estimate velocity. Also, report if the wind conditions are gusty, or if the wind direction or velocity is variable or has changed recently. 5. If any obstacle(s) exist, ensure their description, position and approximate height are communicated…

  • LANDING AREA RECONNAISSANCE AND PLANNING

    seaplane bases have a windsock, but if one is not visible, there are many other cues to gauge the wind direction and speed prior to landing. If there are no strong tides or water currents, boats lying at anchor weathervane ... wind. Be aware that some boats also set a stern anchor, and thus do not move with changes in wind direction. There is usually a glassy band of calm water on the upwind shore of a lake. Sea gulls…