A federal court has dismissed much of a whistle-blower lawsuit claiming commercial and military planes built by The Boeing Co. contain “bogus parts” and should be grounded, but kept the lawsuit alive on allegations that the company retaliated against the employees.

In an order made public Tuesday, U.S. District Judge Wesley Brown said he was dismissing parts of the case – filed under the False Claims Act – because the plaintiffs were not specific enough in their allegations that Boeing defrauded the U.S. government. But the judge allowed them to amend and refile the complaint within 15 days.

The federal lawsuit, filed in Wichita by three former Boeing employees, alleges Los Angeles-based supplier Ducommun Inc. falsified records and supplied defective and nonconforming parts that were later assembled into Boeing aircraft – including more than 32 military aircraft.