美国陆军再次选中利顿公司的应用技术分部为其固定翼和旋翼飞机生产 APR-39 A(V)1威胁告警系统。利顿公司自 1986年赢得第一个合同起已交付了约3100套这样的系统。新签的基本合同要求提供1000多套系统及外场维护和工作台检测设备,还有400套供选购的额外系统。APR-39 A(V)1是为执行低空和超低空任务的直升机和固定翼飞机研制的数 The Army again selected Litton’s Applied Technology division to produce the APR-39 A (V) 1 threat alert system for its fixed-wing and rotary-wing aircraft. Litton has delivered about 3,100 such systems since winning the first contract in 1986. The newly signed basic contract calls for the provision of more than 1,000 systems and field maintenance and bench test equipment, as well as 400 additional systems for purchase. APR-39 A (V) 1 is the number developed for helicopters and fixed-wing aircraft performing low-altitude and ultra-low-altitude missions