http://www.bbc.co.uk/news/business-21038128
16 January 2013 Last updated at 15:18 GMT
Top Japan airlines ground Boeing 787s after emergency
Japan's two main airlines have grounded their Boeing 787 Dreamliners after one was forced to make an emergency landing because of battery problems.
All Nippon Airways (ANA) grounded its fleet of 17 Dreamliners when its flight NH 692 from Yamaguchi Ube was forced to land shortly after take-off.
Japan Airlines followed suit, saying it would ground its fleet of seven 787s from 16 January until further notice.
This is the latest setback for Boeing and its problem-hit Dreamliner planes.
Shares in Boeing fell more than 3% at the start of trading in New York following the Japanese announcements on Wednesday.
In recent weeks, Dreamliners have suffered issues including fuel leaks, a cracked cockpit window, brake problems and an electrical fire.
"You're nearing the tipping point where they need to regard this as a serious crisis," said Richard Aboulafia, a senior analyst with the Teal Group in Fairfax, Virginia.
"This is going to change people's perception of the aircraft if they don't act quickly."
Battery malfunction
On Wednesday, ANA's flight NH 692 left Yamaguchi Ube in western Japan at 08:10 local time (23:10 GMT) and headed for Tokyo's Haneda airport.
Earlier reports that smoke was seen in the cockpit were inaccurate, ANA said. The pilots saw a warning on their computer screen telling them there was smoke inside one of the electrical compartments, the airline said. The source of the smoke is not yet known.
The pilots also received a warning that there was a fault in the battery system. ANA said the battery in the forward cargo hold was the same type as the one involved in a fire on another Dreamliner at a US airport last week.
The ANA flight landed at Takamatsu airport at 08:47 on Wednesday after the pilot saw an error message in the cockpit.
"There was a battery alert in the cockpit and there was an odd smell detected in the cockpit and cabin, and [the pilot] decided to make an emergency landing," said Osamu Shinobe, an ANA vice president, at a news conference.
ANA said that the 129 passengers and eight crew were evacuated, with a number of people sustaining minor injuries.
The Reuters news agency reported that five people were injured, while Bloomberg said that one person was sent to hospital. ANA officials were not immediately available to confirm the figures.
The BBC's correspondent in Tokyo, Rupert Wingfield-Hayes, said that local television footage showed emergency chutes were deployed from the plane. There were also fire trucks on the runway.
Paul Lewis, a spokesman for Boeing, told the BBC that the planemaker was "aware of the diversion of a 787 operated by ANA to Takamatsu in western Japan".
He added that Boeing "will be working with our customer and the appropriate regulatory agencies".
Analysis
Rupert Wingfield-Hayes
BBC News, Tokyo
There have been six separate safety incidents with Japanese-owned 787s in the last week and a half. But they are not all equal.
The incident today was by far the most serious. Smoke inside an aircraft while in-flight is always a serious matter. That's why the plane was so quickly diverted, and probably why ANA and JAL have now ordered their fleets to be grounded.
It also looks like this incident may not be isolated. It appears very similar to an electrical fire on board a Japan Airlines 787 in the United States last week.
The source of that fire was the 787's lithium Ion battery pack. All the way back in 2007, the US Federal Aviation Administration expressed concern about the installation of Lithium Ion batteries on board the 787 because of their known problem with so-called "thermal runaway". It's a problem that has caused mobile phones and laptop computers to catch fire in the past.
The 787 is not the only aircraft to use Lithium Ion battery packs. The Airbus A380 uses a smaller number. And the upcoming Airbus A350 will use a much larger number
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