A method for selecting a runway at an airport, which does not have traffic control, depending upon the wind direction at that airport, comprising the steps of:
- providing a first circular scale having a periphery and compass azimuth indicia thereon which extend therearound at said periphery thereof and which are spaced apart ten degrees and which are numbered 010 to 360;
- providing a second circular scale, having a periphery, which has a smaller diameter than the first circular scale and which has runway numbering indicia thereon which extend therearound and which are radially aligned with the azimuth indicia on said first circular scale and which are numbered one through 36 with runway number 36 being positioned radially inwardly of azimuth 180, runway number 9 being positioned radially inwardly of azimuth 270, runway number 18 being positioned radially inwardly of azimuth 360 and runway number 27 being positioned radially inwardly of azimuth 090;
- positioning the second circular scale on the first circular scale so that said periphery of the second circular scale is spaced inwardly of said periphery of the first circular scale and so that the compass azimuth indicia on the first circular scale is positioned adjacent said periphery of the second circular scale;
- providing a first, elongated, flat strip having first and second ends;
- selectively rotatably mounting the first strip about the center of the second circular scale so that the ends thereof are positioned adjacent the runway numbering indicia on the second circular scale;
- providing a second, elongated flat strip having first and second ends;
- selectively rotatably mounting the second strip about the center of the second circular scale so that the ends thereof are positioned adjacent the appropriate runway numbering indicia on the second circular scale;
- providing a wind direction indicator;
- rotatably mounting the wind direction indicator over the first and second scales;
- determining the runway number of a first runway at the destination airport;
- rotating the first strip so that the first strip is aligned with the runway number of the first runway;
- determining the runway number of a second runway at the destination airport;
- rotating the second strip so that the second strip is aligned with the runway number of the second runway at the destination airport;
- establishing radio contact with a source of information regarding the wind direction at the destination airport;
- rotating the wind direction indicator so that the wind direction indicator is aligned with the direction of wind at the destination airport;
- visually comparing the wind direction indicator to the positions of the first and second strips;
- and choosing the runway which is most directly into the wind based on the positions of the first and second strips and the wind direction indicator.