(Reuters) - Boeing Co
The plane-maker, which had planned three days of celebrations to mark the long-awaited first delivery, did not disclose the problem and referred questions to the customer.
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Boeing said it was working with Cargolux to resolve the issues and to set delivery dates for the airplanes. A spokesman declined to say how the snag would affect the 747-8F delivery schedule.
(Reporting by Kyle Peterson in Chicago; Editing by Phil Berlowitz)