September 17, 2009

Nimiq 5 Communications Enabled by MDA Antennas

Montreal, Qc. - MacDonald, Dettwiler and Associates Ltd., a leading provider of satellite systems is very delighted to have participated and made a substantial contribution to the Nimiq 5 spacecraft, a Canadian commercial space program. The satellite was successfully launched on Thursday September 17, 2009.

The Nimiq 5 satellite was manufactured for Telesat a Canadian satellite service provider. The program will deliver a wide range of high definition and direct-to-home television services across Canada and the United States. It has a planned 15-year mission life and will operate in geostationary orbit.

MDA's Montreal operation supplied all five communications antennas onboard the satellite. These antennas will offer 32 high power channels and carry out all communication between the satellite and the earth over Canadian and US regions.

MDA is very proud to have designed, manufactured and tested the antennas using its state of the art facilities at Ste-Anne-de-Bellevue and world renowned expertise.

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 3,200 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.sm.mdacorporation.com

For more information, please contact:

Nathalie Patenaude
Manager, Public Affairs
Telephone: (514) 425-3066
E-mail: Nathalie.patenaude@mdacorporation.com