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- Dubai 05:28 06:46 12:12 15:10 17:32 18:51
Boeing suffered another huge blow on Wednesday as US regulators ordered airlines to stop flying 787 Dreamliners until a fire risk linked to the plane's lithium batteries has been resolved.
Japan's two biggest airlines had already taken almost half the global fleet out of service, but the announcement by the Federal Aviation Administration (FAA) means 30 of the world's 50 Dreamliners have now been grounded.
"As a result of an in-flight, Boeing 787 battery incident earlier today in Japan, the FAA will issue an emergency airworthiness directive (AD) to address a potential battery fire risk in the 787 and require operators to temporarily cease operations," the FAA said in a statement.
"Before further flight, operators of US-registered, Boeing 787 aircraft must demonstrate to the Federal Aviation Administration that the batteries are safe," it said.
United Airlines, the world's biggest airline, is currently the only US airline operating the 787, with six airplanes in service.
"United will immediately comply with the Airworthiness Directive and will work closely with the FAA and Boeing on the technical review as we work toward restoring 787 service," the airline said in a statement.
"We will begin reaccommodating customers on alternate aircraft," it added.
The FAA action was prompted by a battery incident during an All Nippon Airways flight that resulted in an emergency landing in Japan on Wednesday, following another incident last week on an ANA 787 on the ground in Boston.
"The root cause of these failures is currently under investigation," the FAA said.
"These conditions, if not corrected, could result in damage to critical systems and structures, and the potential for fire in the electrical compartment."
The FAA said it was also alerting the international aviation community so authorities in other countries could take similar action.
ANA -- the world's first carrier to receive the Dreamliner from Boeing after years of delays -- said smoke possibly stemming from a faulty battery forced the pilots to land the passenger plane in Takamatsu, southwestern Japan.
The airline said cockpit instruments had detected the smoke inside a forward electrical compartment, and Japanese Transport Minister Akihiro Ota called it a "serious incident that could have led to a serious accident."
One of the 129 passengers on the Tokyo-bound domestic flight was quoted by broadcaster NHK as saying he "smelled something strange" after take-off and feared the plane was going to crash.
Nobody was seriously injured however when the passengers and eight crew members evacuated via emergency chutes.
ANA and its rival Japan Airlines (JAL) -- among Boeing's biggest customers for the Dreamliner -- said they would ground their entire 787 fleets through Thursday at least, pending safety checks.
ANA has 17 Dreamliners and JAL has seven -- almost half the 50 planes currently in operation worldwide. Boeing has orders for nearly 850.
The Dreamliner is considered an aviation milestone with its extensive use of lightweight composite materials and electronics, instead of aluminum and hydraulics, and airlines have embraced the plane as a way to cut fuel costs.
But a week of mishaps leading up to the forced landing in Japan has made for unwelcome headlines for Boeing -- which says it has "complete confidence" in the plane and has pledged to work with customers and regulators.
Until now, the rash of problems had not dented investor confidence in the aerospace giant. From the first incident this year, on January 7, until the market closed Tuesday, Boeing's share value had climbed 0.6 percent.
But on Wednesday, even before the FAA announcement, Boeing shares plunged 3.4 percent in New York, dragging down the Dow Jones Industrial Average.
"The one thing that must send shudders through Boeing Co. management and its board is that the 787 Dreamliner could be taken out of service because of a series of accidents," said Douglas McIntyre of 24/7WallSt.com.
"Boeing engineers, aircraft experts and several Wall Street analysts have defended problems with the jet as routine for a new airplane. The power of those defenses is now over," he added in a research note.
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