MDA continues support of robotics on the International Space Station

Vancouver, BC - MacDonald, Dettwiler and Associates Ltd. ("MDA" or the "Company") (TSX: MDA), a global communications and information company, today announced that it has signed a contract amendment with the Canadian Space Agency for CA$5 million. The amendment provides funding for continued support to the ongoing robotic operations of the Mobile Servicing System on the International Space Station (ISS).

The Mobile Servicing System comprises Canadarm2, the Special Purpose Dextrous Manipulator known as “Dextre,” and the Mobile Base System. These three robotic systems perform a variety of operations ranging from resupply, maintenance, and servicing tasks on the space station that are critical to the on-going operations of the ISS.

About MDA

MDA is a global communications and information company providing operational solutions to commercial and government organizations worldwide.

MDA's business is focused on markets and customers with strong repeat business potential, primarily in the Communications sector and the Surveillance and Intelligence sector. In addition, the Company conducts a significant amount of advanced technology development.

MDA's established global customer base is served by more than 4,800 employees operating from 15 locations in the United States, Canada, and internationally.

The Company's common shares trade on the Toronto Stock Exchange under the symbol "MDA."

Related Websites
www.mdacorporation.com

Forward-Looking Statements

This release contains forward-looking statements and information, which reflect the current view of MacDonald, Dettwiler and Associates Ltd. (“MDA” or the “Company”) with respect to future events and financial performance. The forward-looking statements in this regard include statements regarding the award and amendment of a contract with an intergovernmental agency. Any such forward-looking statements are based on MDA’s current expectations, estimates, projections and assumptions in light of its experience and its perception of historical trends. The factors and assumptions underlying the forward-looking statements in this release include contracts with any government or intergovernmental agency not being terminated. Any such forward-looking statements are subject to a number of risks and uncertainties that could cause actual results to differ materially from current expectations. MDA cautions readers that should certain risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary significantly from those expected. The risks that could cause actual results to differ from current expectations include, but are not necessarily limited to: changes in government policies, priorities, regulations or government agency mandates, or funding levels through agency budget reductions, the imposition of budgetary constraints or a decline in government support or deferment of funding for programs in which the Company or its customers participate; satellite system failure; failure of third parties and subcontractors; and failure to anticipate changes in technology, technical standards and offerings or comply with the requisite standards, or failure to maintain technological advances and offer new products to retain customers and market position.

For additional information with respect to certain of these risks or factors, plus additional risks or factors, reference should be made to the Company's continuous disclosure materials filed from time to time with Canadian securities regulatory authorities, which are available online under the Company's profile at www.sedar.com or on the Company's website at www.mdacorporation.com.

The Toronto Stock Exchange has neither approved nor disapproved the form or content of this release.