It is normal during flight that the track over the ground is different from the desired trajectory defined during planning.
If this is the case, some heading corrections should be made so that we can return to the track.
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The track you want to fly is the planned track, and the track you actually make over the ground is the track made good. The difference between them is called track error (TE).
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The angle at which we want to close to come back to the planned track is the closing angle (CA). The CA will depend how much further we want to rejoin the planned track.
The 1 in 60 rule can be used to calculate the TE:
TE = (distance off-track/planned track distance flown) x 60
TE = (7/75) x 60 = 5,6º R
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