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Dreamliner Grounded Until End Of May Or Longer

(c) Sky News 2013

The airline operating the biggest Boeing Dreamliner fleet has announced its planes would remain grounded until at least the end of May.

All Nippon Airways (ANA) made the decision as as technical and safety woes continue for Boeing (NYSE: BA - news) 's hi-tech plane.

The airline said it would cancel 1,714 flights in April and May, a period that includes Japan's busy Golden Week holidays.

The flight suspension takes the total affected flights to more than 3,600 since the Dreamliner was grounded globally in January.

"Unfortunately, it includes Golden Week, but we have decided to inform our customers in advance as the prospect for their resumption is still unseen," a company spokeswoman said.

ANA is Boeing's biggest Dreamliner customer so far, with 17 of the world's 50 operational 787s, with Japan Airlines (JAL) as another key 787 operator.

Around a third of the components of the composite construction aircraft are made in Japan, including the lithium-ion that have been central to the model's grounding.

The next-generation aircraft has suffered a series of glitches culminating in a global alert from the US Federal Aviation Administration after two incidents involving the battery packs.

All operational 787s were grounded in January after smoke was detected mid-air on a flight in Japan.

That incident came just days after the lithium-ion battery pack caught fire when a JAL-operated plane was parked at Boston's Logan airport.

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