Lockheed Martin was awarded a $141 million contract by the Portuguese Ministry of Defense to upgrade the mission system avionics on five P-3C maritime surveillance aircraft. Under the contract, Lockheed Martin will provide a full mission system upgrades, including electronic support measures, acoustics, communications, electro-optic and infrared systems, as well as new data management software and hardware, including controls, displays and mission computers. Systems design, development and integration work will be completed at Lockheed Martin’s Eagan, Minn.-based Tactical Systems line of business. After equipment installation and check-out at Lockheed Martin’s Aircraft and Logistics Center in Greenville, S.C., the first modernized Portuguese Air Force P-3C aircraft will be delivered in late 2009.