Palo Alto, CA - Space Systems Loral (SSL), a leading provider of innovative satellites and spacecraft systems, today announced that the EchoStar XIX satellite, which SSL designed and built for Hughes Network Systems, LLC (HUGHES) was launched yesterday and is successfully performing post-launch maneuvers according to plan. The satellite deployed its solar arrays on schedule following its launch aboard a United Launch Alliance Atlas V provided by Lockheed Martin Commercial Launch Services.

EchoStar XIX is the world’s highest capacity broadband satellite now on orbit, dramatically increasing capacity for HughesNet® high-speed satellite Internet service in North America. EchoStar XIX joins EchoStar XVII to help meet the demand for high-speed Internet for consumers and small businesses in rural and other communities with limited Internet access options.

“EchoStar XIX is an exceptionally powerful satellite that underpins the next generation of satellite Internet,” said John Celli, president of SSL. “It has been an honor to work closely with our long term colleagues at Hughes, advancing satellite’s capability to improve lives by bringing the benefits of quality, high-speed Internet service to homes and small businesses across North America that were previously unserved or underserved by terrestrial broadband services.”

EchoStar XIX provides significantly more capacity than EchoStar XVII, which was also built by SSL and launched in 2012. Like EchoStar XVII, EchoStar XIX is a large, multi-spot beam Ka-band satellite based on the powerful SSL 1300 platform, which has the capability to support a broad range of applications and technology advances. SSL has built nearly 50 satellites with HTS payloads, including two of the highest capacity broadband satellites in service today, and the world’s first true high-throughput satellite, which was launched in 2005.

“EchoStar XIX provides us with increased capacity and coverage enabling us to launch HughesNet Gen5, the next generation of our successful HughesNet satellite Internet service, delivering more speed, more data, and more advanced features for consumers and small businesses in the communities we serve,” said Pradman Kaul, president of Hughes Network Systems. “SSL has been an important partner in helping us achieve this expanded service. It is indeed gratifying to work together to push the capability of satellite technology beyond what was previously possible.”

About Hughes Network Systems

Hughes Network Systems, LLC (Hughes) is the global leader in satellite broadband for home and office, delivering innovative technology solutions and a comprehensive suite of HughesON™ managed services for enterprises and governments worldwide. HughesNet® is the #1 high-speed satellite Internet service in the marketplace, with offerings to suit every budget. To date, Hughes has shipped more than 5 million systems to customers in over 100 countries, representing approximately 50 percent market share. Its products employ global standards approved by the TIA, ETSI and ITU organizations, including IPoS/DVB-S2, RSM-A, and GMR-1.

Headquartered outside Washington, D.C., in Germantown, Maryland, USA, Hughes operates sales and support offices worldwide, and is a subsidiary of EchoStar Corporation (NASDAQ: SATS), a premier global provider of satellite operations and digital TV solutions. For additional information about Hughes, please visit www.hughes.com.

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 15 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, 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.

For additional information with respect to certain of these risks or factors, plus additional risks or factors, reference should be made to the Company's continuous disclosure materials filed from time to time with Canadian securities regulatory authorities, which are available online under the Company's profile at www.sedar.com or on the Company's website at www.mdacorporation.com.

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