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UPDATE 1-Boeing on course to achieve 787 production target-executive

* Planemaker on path to build 10 a month-exec

* Supply chain includes 325 suppliers, 5,000 factories

* "We made mistakes along the way"-VP for supply

(Adds background, details)

NAGOYA, Oct 10 (Reuters) - Boeing Co is on course toachieve a difficult production target for its fuel-efficient 787Dreamliner jets, an executive said on Wednesday, after thecompany fell behind its initial delivery schedule due todevelopment delays.

"We made mistakes along the way. We are currently on path toachieve 10" a month, Jeffrey Luckey, vice president in chargesupply management for the 787, said on the sidelines of theJapan Aerospace International Exhibition in Nagoya.

Boeing now makes three and a half of the newcarbon-composite jets a month. It plans to raise output to fivea month by the end of the year and then to 10 a month by the endof 2013. The company now has 325 suppliers building parts forthe 787 in 5,000 factories worldwide, Luckey said.

Japanese companies including Fuji Heavy Industries Ltd

and Mitsubishi Heavy Industries Ltd arebuilding the wings and other sections of Boeing's latestpassenger jet equal to more than a third of the plane. It is thefirst time the U.S. company has asked foreign firms to build thewings for one of its jets.

Final assembly of the Dreamliner is done in the UnitedStates at Boeing plants in South Carolina and Washington.Japan's All Nippon Airways was the launch customer forthe 787, having so far ordered 66 jets, which it has put at thecenter of its fleet planning.

Boeing's new, lightweight, fuel-efficient passenger jet wasplagued by supply chain problems and production delays. So farBoeing has won 824 orders for the plane and has delivered around60.

(Reporting by Tim Kelly; Editing by Matt Driskill)

((tim.kelly@thomsonreuters.com)(+813-6441-1311))

Keywords: BOEING DREAMLINER/PRODUCTION