Richmond, BC - MacDonald, Dettwiler and Associates Ltd. ("MDA" or the "Company") (TSX: MDA), a global communications and information company, today announced that it has signed a contract with OneWeb Satellites to develop and manufacture 3,600 communication antenna subsystems for integration on 900 satellites for the OneWeb Low Earth Orbit Constellation. MDA will manufacture the antenna subsystems at its Montreal, Quebec facility.

Brian Holz, CEO of OneWeb Satellites said, “We are pleased to be working with MDA on the OneWeb satellites. Their experience in antenna design and high-volume manufacturing made MDA an obvious choice. MDA will be providing a key aspect of our system, enabling the connectivity between OneWeb user terminals, the satellites, and our access points, leveraging their leading technology and engineering team.”

OneWeb Satellites, a joint venture equally owned by Airbus Defence and Space and OneWeb has been set up, following the selection in June 2015 of Airbus Defence and Space as the industrial partner of OneWeb to design and build its satellites. The constellation, to be operated by OneWeb, will provide high-speed internet services with global coverage. MDA’s past experience with producing large quantities of reliable antennas for constellations, combined with their ingenuity and specific approaches to assembly and testing will allow them to meet OneWeb’s delivery needs.

Steve Oldham, senior vice president for business development at MDA said, “We are delighted with our progress with OneWeb Satellites, which demonstrates MDA’s ability to develop cost effective solutions for constellations of satellites.”

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.

The Company's common shares trade on the Toronto Stock Exchange under the symbol MDA.

Related Websites
www.mdacorporation.com

Forward-Looking Statements

This release contains forward-looking statements and information, which reflect the current view of MDA with respect to future events and financial performance. The forward-looking statements in this regard include statements regarding the award of a contract. Any such forward-looking statements are based on MDA’s current expectations, estimates, projections and assumptions in light of its experience and its perception of historical trends. The factors and assumptions underlying the forward-looking statements in this release include contracts not being terminated. Any such forward-looking statements are subject to a number of risks and uncertainties that could cause actual results to differ materially from current expectations. MDA cautions readers that should certain risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary significantly from those expected. The risks that could cause actual results to differ from current expectations include, but are not limited to: risks associated with operating a satellite including in-orbit failures or impaired satellite performance; failure of third parties and subcontractors; failure of systems to meet performance requirements; and failure to anticipate changes in technology, technical standards and offerings or compliance with the requisite standards.

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.

The Toronto Stock Exchange has neither approved nor disapproved the form or content of this release.