The Norman Transcript

Nation/World

March 9, 2014

Lost in flight: Why Malaysia Airlines jet might have disappeared

(Continued)

NEW YORK —

— A catastrophic structural failure of the airframe or its Rolls-Royce Trent 800 engines. Most aircraft are made of aluminum which is susceptible to corrosion over time, especially in areas of high humidity. But given the plane’s long history and impressive safety record, experts suggest this is unlikely.

More of a threat to the plane’s integrity is the constant pressurization and depressurization of the cabin for takeoff and landing. In April 2011, a Southwest Airlines Boeing 737 made an emergency landing shortly after takeoff from Phoenix after the plane’s fuselage ruptured, causing a 5-foot tear. The plane, with 118 people on board, landed safely. But such a rupture is less likely in this case. Airlines fly the 777 on longer distances, with many fewer takeoffs and landings, putting less stress on the airframe.

“It’s not like this was Southwest Airlines doing 10 flights a day,” Hamilton said. “There’s nothing to suggest there would be any fatigue issues.”

— Bad weather. Planes are designed to fly through most severe storms. However, in June 2009, an Air France flight from Rio de Janeiro to Paris crashed during a bad storm over the Atlantic Ocean. Ice built up on the Airbus A330’s airspeed indicators, giving false readings. That, and bad decisions by the pilots, led the plane into a stall causing it to plummet into the sea. All 228 passengers and crew aboard died. The pilots never radioed for help.

In the case of Saturday’s Malaysia Airlines flight, all indications show that there were clear skies.

— Pilot disorientation. Curtis said that the pilots could have taken the plane off autopilot and somehow went off course and didn’t realize it until it was too late. The plane could have flown for another five or six hours from its point of last contact, putting it up to 3,000 miles away. This is unlikely given that the plane probably would have been picked up by radar somewhere. But it’s too early to eliminate it as a possibility.

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