The Defense Department said the indefinite-delivery/indefinite contract contains a one-year option.
The company will perform life cycle maintenance for 11 F-5 series planes that support the Norfolk, Va.-based commander of the Naval Air Force Reserve.
The company will perform aircraft maintenance, repair, engineering and logistics, technical and program management for the F-5 aircraft.
The Pentagon said Northrop will perform work from St. Augustine, Fla. The contracting firm will perform work in additional areas as necessary.
The Pentagon expects work to finish in April 2013 but work could continue through April 2014 if all options are exercised.
Obligated contract funds will expire at the end of the current fiscal year.
U.S. Naval Supply Systems Command’s Fleet Logistics Center’s contracting office in Philadelphia is the contracting activity.
A Northrop subsidiary recently won a follow-on NATO contract to provide an air traffic control receiver to an Afghanistan site.