The company said it won two contracts in 2011 to make the planes, including a $1.7 billion award in November 2011 for seven low rate initial production planes.
Contract work will also include aircrew and maintenance training, logistics support, spares, support equipment and tools.
Navy crews have had a couple of months of training with the first plane, said Chuck Dabundo, vice president and Poseidon program manager.
Navy pilots flew the plane from Seattle to the Naval Air Station, where the first plane is being used for aircrew training.
The company also holds a separate contract for system development and demonstration contract on test six flight-test and two ground-test Poseidons
To date, the test aircraft have flown for more than 2,800 hours, mainly out of the Naval Air Station in Patuxent River, Md.
According to the company, the Navy plans to purchase 117 of the planes for missions involving anti-submarine warfare, anti-surface warfare and intelligence, surveillance and reconnaissance.