Aircraft maintenance will be handled by L-3 Vertex of Madison starting in December.
The new vendor is taking over from DynCorp International, which had the maintenance contract for seven years. DynCorp had 487 workers at the base.
The Air Force says the new contract is also a seven-year agreement.
L-3 Vertex will take over maintenance on Dec. 1. The contract runs through Sept. 29, 2019.