Horrible, seems like a late attempt to climb a bit. Surely 6,000 feet is not the ceiling of an Arrow with 2 adults and a child on board?
EDIT
https://www.blick.ch/news/schweiz/bl...d15482646.html some footage here of the crash site. In the report a witness speaks of two fire "streaks" prior to an explosion, possibly misfiring engine prior to the crash? The weather seems CAVOK at least during the footage. The crash site seems well below any ridge and the tracking data show no substantial loss of altitude prior to the crash