Northrop Grumman U.K.-based subsidiary Park Air Systems was awarded a contract from NAV CANADA, Canada’s civil air navigation services provider, to supply VHF radios as part of a $50 million replacement program throughout Canada. Under terms of the contract, Park Air Systems will supply radios to replace all ground-to-air VHF radio equipment throughout 320 sites across Canada. More than 2,000 pairs of radios in total will be replaced. For related news