MDA Reports Fourth Quarter And Fiscal Year 2006 Results

Richmond, B.C. - MacDonald, Dettwiler and Associates Ltd. (TSX: MDA), a provider of essential information solutions, today reported financial results for the fourth quarter and fiscal year ended December 31, 2006.

For the fourth quarter ended December 31, 2006, consolidated revenues increased by 40% to $288 million compared with $205 million for the same period last year, resulting in earnings before income taxes of $31 million compared with $22 million for the prior year's fourth quarter. The increase in consolidated revenues was driven by continued growth in the U.K. Financial Services sector, as Information Products revenues rose to $207 million from $122 million for the fourth quarter a year ago.

For the fiscal year ended December 31, 2006, consolidated revenues reached $1,053 million, increasing by 26% compared with prior year's revenues of $833 million. Information Products revenues increased to $686 million and Information Systems revenues increased to $367 million. Net earnings for the year increased to $84 million, or $1.95 per diluted share, compared with $68 million, or $1.68 per diluted share, for fiscal year 2005.

	Three months ended December 31,			Twelve months ended December 31,
(amounts in millions of Canadian dollars, except per share amounts)	2006	2005		2006	2005
Consolidated revenues	$ 287.7	$ 205.0		$ 1,052.5	$ 833.4
Earnings before income taxes	30.7	22.3		117.2	91.6
Net earnings	22.1	20.1		83.6	68.1
Net earnings per diluted share	0.51	0.49		1.95	1.68

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.

MDA's Fourth Quarter 2006 unaudited Consolidated Financials are available at:
http://www.mdacorporation.com/investor/financial_reports.shtml

Investor/Analyst Conference Call Today

MDA President and CEO Daniel Friedmann and Executive Vice President and CFO Anil Wirasekara will be available on a Conference Call today, February 28, 2007 at 2:30 p.m. Pacific (5:30 p.m. Eastern) to explain the financial results of the Company and to answer questions.

To participate, dial 1-866-898-9626 in Canada or the United States
In Toronto, dial 416-340-2216

The Conference Call will also be Webcast live and archived at:
http://www.mdacorporation.com/investor/events.shtml

Telephone replay will be available until March 7, 2007, at the following numbers:
Toll free, International, dial: 1-800-408-3053
In Toronto, dial: 416-695-5800
Pass Code: 3212869

Related Websites:
www.mdacorporation.com

Forward-Looking Statement

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.