MacDonald, Dettwiler and Associates Ltd. - Q1 Earnings Announcement Webcast -
May 5, 2010

RICHMOND, BC, May 3 /CNW/ - Notification of Q1 Earnings Announcement Webcast:

    
        MacDonald, Dettwiler and Associates Ltd. (TSX: MDA)
        Q1 Earnings Announcement Webcast
        May 5, 2010, 5:30 PM ET
    

To listen to this event, please enter http://w.on24.com/r.htm?e=207326&s=1&k=8FD0769D392D3A44E422F82F6B94EDC1 in your web browser.

For a complete listing of upcoming and archived webcasts available through CNW Group, please visit our events calendar at http://www.newswire.ca/en/webcast/index.cgi. CNW's webcast of earnings calls is consistent with Investment Inudstry Regulatory Organization of Canada (IIROC) objectives of providing investors with material information broadly and quickly.

For further information: Wendy Keyzer, MDA External Relations, Telephone: [phone], E-mail: [email protected]