Flymaster GPS - Flying a FAI Triangle

7 Flying a FAI Triangle
Figure 7.1: Triangle 1
As described in Section 4.4 an FAI triangle with the qualifying 28% leg rule can be managed using the FAI
triangle menu page. This rule states that the shortest leg must not be less than 28% of the total triangle
distance (triangle perimeter). Once the FAI triangle assistant module becomes active it is always checking
the 28% rule consistency and gives information to the pilot on how to navigate the triangle. The FAI
triangle assistant module becomes active once vertex 1 of the triangle is manually dened. Alternatively,
the pilot can activate the module by dening the directly vertex 2. In this case vertex 1 is dened using
the coordinates of the takeo.
In the example of gure Figure 7.1 the pilot has just dened vertex 1 (represented by a circle). As the
minimum leg distance was not passed yet the Triangle Size data eld shows '0.000'. The navigation is
pointing to vertex 1, so all the navigation related data elds and graphical elements are set according.
Figure 7.2: Triangle 2
In the example of gure Figure 7.2 the pilot has traveled more than the minimum leg distance, but has
47