Regarding the yellow and the red track on the aaib image/globe.
- Yellow represents the solution which covers the greatest distance, red the solution for smallest distance?
- Yellow is great circle, red is constant magnetic heading?
Together with the search areas that points to great circle solution, i.e. FMC and not to A/P => deliberate action?
Edit: Thinking about it, there could be a solution with 450 knots and constant magnetic heading which is much closer to the yellow track => deliberate action not confirmed