Boeing has shifted 777 and 737 component work packages to Vought as a part of the agreement that saw the transfer of control of Vought's South Carolina 787 operations to the airframer.
Vought says the parts will be fabricated at the comapny's newly-expanded Stuart, Florida facility.
Boeing announced 7 July its intent to acquire Vought's South Carolina operations for $560 million and expects the deal should be completed within the next 30 days.
Boeing says Vought will share fabrication responsibility along side Mitsubishi Heavy Industries for the inboard flaps for the 737 Next Generation family of narrowbody aircraft.
Mitsubishi previously was the sole source supplier on the 737's inboard flaps, having recently completed the 3000th ship set in April for delivery to Boeing's Renton, Washington final assembly facility where the 737 is completed.
Mitubishi fabricates the 737's inboard flaps at its Tobishima Plant, which is part of its Nagoya Aerospace Systems Works in Aichi Prefecture in Japan.
Vought's expanded role on Boeing commercial platforms will also see the company fabricate for the outboard flaps of the 777, which are currently manufactuered by Alenia.
According to Alenia's website, the outboard flap is the longest composite part on the long-range twin.
Boeing declined to specify if the outboard flap contract will be dual-sourced along side Alenia or manufactured solely by Vought.
Vought says it will also assume fabrication responsibility for the ailerons of the 777 as well.
The company will add this new fabrication to its existing statement of work for the 777, which includes the inboard flaps and spoilers for the aircraft.
Both Alenia and Mitsubishi are parts suppliers on a variety of Boeing Commercial Airplane programmes including first tier structure partners on the 787.