MDA Signs Information Solution Contract To Monitor Nuclear Power Plant Subsystems

Richmond, B.C. - MacDonald, Dettwiler and Associates Ltd. (TSX: MDA), a provider of essential information solutions, announced today that it has received a multi-million dollar contract from Ontario Power Generation (OPG) to replace the information solution that has monitored performance of the pressure tubes in CANDU reactors at the Pickering, Darlington, Bruce, Pt. Lepreau and Gentilly 2 Nuclear Generating Stations.

The company will supply upgraded systems to control the sophisticated Channel Inspection & Gauging Apparatus for Reactors (CIGAR). In addition, the company will deliver a test platform used for operator and maintenance training.

Paul Cooper, general manager of MDA's Brampton Operations where the contract will be executed, stated: "We are very pleased with this second contract from OPG, the first being a contract earlier this year to automate inspection of the vault which houses the reactor vessel. These contracts demonstrate the adaptability of our advanced space technology to complex terrestrial applications."

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 earth and space based information solutions, ranging from complex operational systems, to tailored information services, to electronic information products.

MDA employs more than 3,000 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.opg.com

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. 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. Additional information on these and other potential factors that could affect MDA's financial results are detailed in documents filed from time to time with the applicable Canadian securities regulatory authorities.

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