MDA wins a further contract for AM5 and AM6 with Russia

For immediate release: February 3, 2010

Richmond, B.C. - MacDonald, Dettwiler and Associates Ltd. (TSX: MDA), a provider of essential information solutions, announced today that it has signed a contract in excess of $45 million (USD) with the Russian Radio Research and Development Institute (NIIR).

MDA will provide key sub-systems to be incorporated into the advanced information solutions previously announced in November 2009 for the Express AM5 and Express AM6 satellites.

Dr. Marc Donato, a vice president within MDA's Information Systems group said, ‘MDA was proud to participate in the Quebec mission to Russia in December 2009, hosted by Quebec’s Premier Jean Charest, and to contribute in building a closer economic tie with Russia. We are committed to establish a solid, long term relationship with NIIR and to further develop bilateral relations between the Province of Québec and Russia.’

About MDA

MDA provides advanced information solutions that capture and process vast amounts of data, produce essential information, and improve the decision making and operational performance of business and government organizations worldwide.

Focused on markets and customers with strong repeat business potential, MDA delivers a broad spectrum of information solutions, ranging from complex operational systems, to tailored information services, to electronic information products.

MDA employs more than 3,200 people in locations across the United States, the United Kingdom, and Canada. The Company's common shares trade on the Toronto Stock Exchange under the symbol TSX:MDA.

Related Websites:
www.mdacorporation.com
www.niir.ru/eng/page.php?trid=11

Forward-Looking Statements

This release contains forward-looking statements and information, which reflect the current view of MacDonald, Dettwiler and Associates Ltd. with respect to future events and financial performance. The forward-looking statements in this regard include statements regarding the award of a contract. 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. Any such forward-looking statements are subject to risks and uncertainties and MDA’s actual results of operations could differ materially from historical results or current expectations. The factors and assumptions underlying the forward-looking statements in this release include contracts 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 failure of third parties and subcontractors; failure of systems to meet performance requirements; changes in government priorities, funding levels, contracts and regulations; satellite failure; and failure to anticipate changes in technology, technical standards and product offerings or comply with the requisite standards.

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

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

For more information, please contact:

Wendy Keyzer
MDA External Relations
Telephone: 604-231-2743
E-mail: wendy@mdacorporation.com