Originally Posted by
RetiredF4
Wherever you got that information from, it does not look right. The heading difference between the flown grass strip track and the paved strip is 035 degrees, and would have required a total different track from beginning and flight over the houses of Habsheim, which was not permitted for airshow traffic. They would have flown a different track to approach the airfield some miles out with the track of 020 degrees for the paved strip. But the track was flown along the east side of the highway Basel-Straßbourg which is about heading 345 like the grass strip and which is over thin populated areas and offers good visual clues, which makes sense.
Check the BEA report page 19, which confirms what I said. Rather that turn around and make a second and exact approach to the grass strip, the PIC elects to "fudge" an approach from their current position. The reasons behind that decision we will never know - but that decision was nevertheless made and executed.