Figure 4.5-11 Preflight Wind Estimation

CALCULATING PREFLIGHT HEADINGS AND GROUNDSPEEDS

Things to remember: erase the wheel completely before starting each problem, take time

to analyze the type of wind you have, and estimate its' effects.

SITUATION: Your mission requires you to fly a true course of 218 while maintaining 325

kts TAS. If the winds are forecasted to be from 100 at 40 kts, what TH and GS will you fly?

Estimate first! Sketch out the winds in relation to the desired TC. In this case, there is a

Left Tailwind. This will produce the following: GS > TAS and TH < TC (Figure 4.5-11).

Figure 4.5-11 Preflight Wind Estimation

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