alf5071h
I never meant to imply one should ignore published procedures, only to give a simple way to judge proper lead-points for a 90 degree turn from arc to course/radial. If the published turn-point is based on 180 GS, and your actual GS is 300, at least you can anticipate an overshoot. Also, many procedures don't have published lead-points. It's just a simple tool.