ATK has received a $48-million production contract from the U.S. Navy for the manufacturing of the AAR-47 Missile Warning System.

The award encompasses production of new assemblies, including optical sensor converters and computer processors, as well as options for retrofitting weapon replaceable assembly upgrades and delivery of ATK's Countermeasures Signal Simulator (CSS) to test the systems operability.

ATK's AAR-47 Missile Warning System is a combat-proven electronic warfare system designed to protect helicopters and fixed-wing aircraft from surface-to-air threats. The AAR-47 is the only system in use today that integrates missile, laser and hostile fire threat warning into a single system. With ATK's unique Hostile Fire Indication (HFI) capability added to the AAR-47, military aircrews flying helicopters and fixed-wing aircraft can detect a wider range of threats to their aircraft, including smaller-caliber weapon fire and rocket propelled grenades.