NEW : An aviation magazine wonders why the crew were not able to cope with the stall . CNN 's aviation correspondent Richard Quest said the report `` shows that the original incident -- the blocked pitot tubes and failed speed sensor -- was serious but not catastrophic . '' The French report is an analysis of data from the plane 's recorder . Air France says there is no reason to question the abilities of its crew . The recorders were retrieved from the Indian Ocean almost two years after the crash .
NEW : An aviation magazine wonders why the crew were not able to cope with the stall . The French report is an analysis of data from the plane 's recorder . Air France says there is no reason to question the abilities of its crew . The recorders were retrieved from the Indian Ocean almost two years after the crash .