787 heading to Tokyo diverted

United flight lands at Sea-Tac due to alert for oil filter

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SEATTLE — An indication of an oil filter problem prompted the crew of a Boeing 787 flying from Denver to Tokyo to divert to Seattle-Tacoma International Airport on Tuesday afternoon, a United Airlines spokeswoman said.

Flight 139 landed normally and an airline maintenance team was inspecting it, United spokeswoman Mary Ryan said in an email statement.

The plane touched down in Seattle shortly after 4 p.m., a Federal Aviation Administration spokesman said.

United just put its 787s back in the air May 20 after smoldering batteries on two 787s owned by other airlines prompted authorities to ground the planes in January.

In her statement, the United spokeswoman said the crew decided to land in Seattle because of "an indication of a problem with an oil filter."

The airline was providing customers with motel rooms and planned to fly them to Tokyo today, Ryan said.

The plane carried about 200 passengers.

Asked whether the latest 787 issue raised any concerns with United after the recent battery issue, the spokeswoman said she did not immediately have any additional information.

When it returned the 787s to service last month, Chicago-based United said it planned to use the jets on shorter domestic flights before resuming international flying June 10 with Denver-to-Tokyo service as well as temporary Houston-to-London flights. It's adding flights to Tokyo, Shanghai, and Lagos, Nigeria, in August.

Those long international flights are the main reason the 787 exists. Its medium size and fuel efficiency are a good fit for long routes.

At the Paris Air Show on Tuesday, Boeing Co. won major orders from five customers, including United, for a stretched-out version of the 787.

Boeing announced the formal launch of its 787-10 program at the air show and said it already has commitments for 102 jets from the five customers. The new 787-10 lists at $290 million, making the deal worth nearly $30 billion at full price, although customers often negotiate deep discounts.

United remains the only U.S.-based airline to fly the 787, which is steadily winning customers after being beset with problems concerning lithium-ion batteries on two Japanese carriers. The plane, like its newest rival the Airbus A350, uses lightweight materials and new engine technology to cut down on fuel consumption at a time of rapidly increasing jet fuel prices.