MDA Annual General Meeting

Richmond, B.C. - MacDonald, Dettwiler and Associates Ltd. (TSX: MDA), a provider of essential information solutions, will hold its Annual General Meeting at the Terminal City Club in Vancouver on Wednesday, May 11th at 1:30PM.

Schedule:

• 1:30 PM to 1:45 PM: The formal portion of the meeting will be conducted.

• 1:45 PM to 2:30 PM: MDA President and CEO Daniel Friedmann will review the significant events of the past year and discuss some key objectives for 2005.

• 2:30 PM to 3:45 PM: MDA's Senior Management will be available to answer questions.

Guests may arrive before or after the formal portion of the meeting. This event is open to the media.

This event will be Webcast live and then archived at:

http://www.mdacorporation.com/investor/events.shtml

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 2,500 people in locations across the United States, Europe, and Canada. The Company trades on the Toronto Stock Exchange under the symbol TSX:MDA.

Related Websites:
www.mdacorporation.com