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The 787 is one of the most innovative commercial aircraft in the skies today. Half of its structure is made of plastics reinforced with carbon fiber, a composite material that is both lighter and stronger than aluminum. In another first, the plane relies on rechargeable lithium-ion batteries to start its auxiliary power unit, which provides power on the ground or if the main engines quit. Problems with those batteries ultimately led to the grounding in January of the 50 Dreamliners flying at the time. First, a battery ignited on a Japan Airlines 787 shortly after it landed at Boston's Logan International Airport on Jan. 7. Passengers had already left the plane, but it took firefighters 40 minutes to put out the blaze. Problems also popped up on other planes. There were fuel and oil leaks, a cracked cockpit window and a computer glitch that erroneously indicated a brake problem. Then a 787 flown by Japan's All Nippon Airways made an emergency landing after pilots were alerted to battery problems and detected a burning smell. Both Japanese airlines grounded their Dreamliner fleets. The FAA, which just days earlier insisted that the plane was safe, did the same with U.S. planes on January 16. It was the first time the FAA had grounded a whole fleet of planes since 1979, when it ordered the DC-10 out of the sky following a series of fatal crashes. The FAA eventually approved a plan by Boeing to better insulate the battery's eight cells and the addition of a new containment and venting system. Once the changes were made, planes started to fly again. Ethiopian Airlines was the first airline to resume using the 787, with a flight on April 27 from Ethiopia's capital of Addis Ababa to Nairobi, Kenya, after the battery incidents. The registration number of the plane at Heathrow -- ET-AOP -- is the same as the aircraft used in the April 27 flight. Randy Tinseth, vice president of marketing for Boeing's commercial unit, was on that initial flight and said at the time that the flight "left on time, landed early and was truly perfect." Friday's fire led many to initially question if that solution was not enough. "For Boeing's sake, I hope it's not the batteries," said Mary Schiavo, former inspector general of the U.S. Department of Transportation. "There was a lot of criticism that the FAA didn't fully understand the battery issues when they certified the batteries. People got over that, and they kind of thought that was behind them." If this is a battery-caused fire, she said, "It puts the FAA in a very bad spot."
[Associated
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