Posted by John McHaleSEATTLE, 12 June 2010. Boeing [NYSE: BA] P-8A Poseidon aircraft T2 completed the program's first mission systems test flight in Seattle. T2 will be used to verify integrated mission systems performance during flights in Seattle and at Naval Air Station Patuxent River, Md.During the three-hour flight, the joint Boeing and Navy test team exercised mission computing on all five operator workstations and demonstrated key systems -- including acoustics, mission planning, tactical data-link, communications, electronic support measures, and flight test instrumentation -- for the first time."This successful flight moves us a step closer to getting the Poseidon and its next-generation radar and sensors into the hands of the warfighter," says Chuck Dabundo, Boeing vice president and P-8 program manager. "Future flights will demonstrate the state-of-the-art systems that will provide the Navy superior performance well into the 21st century."T2 is one of five test aircraft that are being assembled and tested as part of the U.S. Navy System Development and Demonstration contract Boeing received in 2004. Boeing's T1 airworthiness-test aircraft entered flight testing in October 2009 and arrived at the Navy's Patuxent River facility in April 2010.The Navy plans to purchase 117 P-8A anti-submarine warfare, anti-surface warfare, intelligence, surveillance, and reconnaissance aircraft to replace its P-3 fleet. Initial operational capability is planned for 2013.