SSL satellite for DISH begins post-launch maneuvers according to plan

Palo Alto, CA - Space Systems Loral (SSL) a leading provider of commercial satellites, today announced that the EchoStar XVIII satellite, designed and built for DISH Network L.L.C., was launched on Saturday and is successfully performing post-launch maneuvers according to plan. Following launch on an Ariane 5 rocket, the satellite’s solar arrays were deployed on schedule and began firing its main thruster to propel it toward its final geostationary orbit. The satellite will augment DISH’s existing fleet, assuring the highest level of ongoing service to DISH customers.

“DISH and SSL have teamed together for many years to drive satellite capability to meet next generation broadcast demand,” said John Celli, president of SSL. “It has been an excellent collaboration together with our friends at Arianespace, and we are pleased that this highly capable satellite is now launched.”

EchoStar XVIII is a high power multi-spot beam satellite that will reinforce DISH service. Based on the SSL 1300 platform, the satellite provides flexibility to augment the DISH fleet. The satellite is designed to provide service for 15 years or more.

About SSL

SSL, a subsidiary of MDA, is a leading provider of commercial satellites with broad expertise to support satellite operators and innovative space related missions. The company designs and manufactures spacecraft for services such as direct-to-home television, video content distribution, broadband internet, mobile communications, and Earth observation. As a Silicon Valley innovator for more than 50 years, SSL’s advanced product line also includes state-of-the-art small satellites, and sophisticated robotics and automation solutions for remote operations. For more information, visit www.sslmda.com.

About MDA

MDA is a global communications and information company providing operational solutions to commercial and government organizations worldwide.

MDA's business is focused on markets and customers with strong repeat business potential, primarily in the Communications sector and the Surveillance and Intelligence sector. In addition, the Company conducts a significant amount of advanced technology development.

MDA's established global customer base is served by more than 4,800 employees operating from 11 locations in the United States, Canada, and internationally.

MacDonald Dettwiler and Associates Ltd.'s (MDA)common shares trade on the Toronto Stock Exchange under the symbol MDA.

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www.mdacorporation.com

Forward-Looking Statements
This news release contains forward-looking statements and information, which reflect the current view of MacDonald, Dettwiler and Associates Ltd. and its subsidiaries (collectively “MDA” or the “Company”) with respect to future events and financial performance. When used in this news release, the words “believes”, “expects”, “plans”, “may”, “will”, “would”, “could”, “should”, “anticipates”, “estimates”, “project”, “intend” or “outlook” or other variations of these words or other similar expressions are intended to identify forward-looking statements and information. Actual results may differ materially from the expectations expressed or implied in the forward-looking statements as a result of known and unknown risks and uncertainties. Known risks and uncertainties include but are not limited to: risks associated with operating satellites and providing satellite services, including satellite construction or launch delays, launch failures, in-orbit failures or impaired satellite performance; risks associated with satellite manufacturing, including competition, cyclicality of MDA’s end-user markets, contractual risks, creditworthiness of customers, performance of suppliers and management of MDA’s factory and personnel; risk associated with financial factors such as volatility in exchange rates, increases in interest rates, restrictions on access to capital by customer or MDA, and swings in global financial markets; risks associated with domestic and foreign government regulation, including export controls and economic sanctions; and other risks, including litigation. The foregoing list of important factors is not exhaustive. The information contained in this news release reflects MDA’s beliefs, assumptions, intentions, plans and expectations as of the date of this news release. Except as required by law, MDA disclaims any obligation or undertaking to update or revise the information herein.

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