The remains of an engine from an Air France Airbus A380 have been recovered from an icy desert in Greenland—and investigators hope the parts will provide clues to an "incredibly rare" midflight engine explosion last weekend. France's BEA air accident agency says the flight's data recorder helped pinpoint the search area and an Air Greenland helicopter spotted the parts, the AP reports. The Paris-Los Angeles flight made an emergency landing in Labrador, Canada, two hours after the explosion destroyed one of its four engines. Passenger David Rehmar, a former aircraft mechanic, tells the BBC that he believes the explosion may have been caused by a fan failure. (More Air France stories.)