A distress call was made by the aircraft at 10.47am, while the plane was “in an abnormal situation”, the French transport ministry said. The crash happened shortly afterwards, it added. The aircraft disappeared off the radar at around 11.20am, Le Figaro reported. The plane dropped from 11,500 metres to 2,100 metres (38,000ft to 6,925ft) in nine minutes between 10.31am and 10.40am, air radar services said. The distress call to air traffic control in Marseilles was “mayday, mayday, mayday” and the pilot requested an emergency descent, meaning all air space had to be cleared below the route of the aircraft."
Link to Original Source