Jet ordered to fly too low, investigators say 06 Sep 2016 SWI
"...Military investigators said at a news conference in Bern that the doomed pilot had been ordered to fly at 3,050 metres above sea level after losing radar contact with his team leader flying just ahead, but that the minimum level for this sector was 4,360 metres above sea level...."
http://www.swissinfo.ch/eng/tragic-a...s-say/42425380