Due to the delays of Aspide integration, the initial version, with Raytheon AIM-7 Sparrows was designated ASA-1. When the Aspide became available, all F-104Ss were upgraded to ASA-2 standard. First flown in 1985 the F-104S-ASA was principally an air-defence aircraft without enhancements to ground attack capabilities and were later modified to interceptor standards (CI) with removal of the 20 mm (.79 in) M-61 Vulcan cannon.[2]