Background
Designed to fulfill the US Air Force’s 1968 requirement for a lightweight air superiority fighter, the F-15 Eagle has arguably been the most successful and dominant air-to-air fighter since its entry into operational service in 1975. Even after over 40 years of exceptional performance and the emergence of the F-22 Raptor, the F-15 is expected to remain in service well into the 21st Century. To keep F-15s current with latest technology to counter anticipated threats, Multi-Stage Improvement Programs (MSIP) have been undertaken between the USAF and the manufacturer to upgrade aircraft during planned depot maintenance intervals. MSIP II is focused on F-15C/D variants, and features upgrades including addition of AIM-120 AMRAAM capabilities, upgrade of its radar system, and select avionics and communications improvements.