OVERVIEW: The Gulfstream G550 "Green JAMMS" is an Italian multi-mission airborne platform modified for joint airborne multisensor capabilities (MMMS), C4ISTAR support, and electronic intelligence. It entered service in 2022 with the Italian Air Force to enhance national and NATO-level airborne surveillance and command networks.

DETAILS: The G550 Green JAMMS (Joint Airborne Multisensor Multi-mission System) is a customized version of the Gulfstream G550 business jet, acquired under a strategic agreement between Italy and Israel for the development of advanced airborne intelligence and surveillance platforms. The aircraft integrates an Italian mission system developed by Leonardo with radar, COMINT, and ELINT suites for theater-level information collection and dissemination. It is powered by two Rolls-Royce BR710C4-11 turbofan engines, with a maximum speed of Mach 0.885 and a range of approximately 12,500 km. The G550 platform was selected for its high-altitude, long-endurance performance and modular adaptability for complex ISR roles.

The MMMS-configured Green JAMMS includes onboard C4ISTAR systems enabling real-time command and control, tactical communications, signal analysis, and strategic data sharing. It features ventral and dorsal sensor fairings, SATCOM arrays, and operator consoles. While specific electronic system model numbers remain classified, the aircraft supports multi-domain surveillance, early warning, and secure network-centric operations.

TYPE: C4ISTAR/SIGINT Multi-Mission Aircraft

FUNCTION: Provides airborne strategic surveillance, command and control, and electronic intelligence gathering to support Italian and NATO-led operations. Its endurance and sensor fusion capabilities make it effective for high-value target monitoring, situational awareness, and interoperable mission coordination.

NOTE:
IOC: 2003 (G550 base model), 2022 (Green JAMMS MMMS variant)
Manufacturer: Gulfstream Aerospace (USA), modified by Leonardo (Italy)
Operators: Italy
Conflict used in: NATO joint surveillance operations (from 2022)

SOURCE:
Italian Air Force: https://www.aeronautica.difesa.it ; Leonardo: https://www.leonardo.com/en/news-and-stories-detail/-/detail/leonardo-s-joint-airborne-multisensor-multi-mission-system ; Gulfstream Aerospace: https://www.gulfstream.com/en/aircraft/gulfstream-g550 ; European Defence Review: https://eurodefense.news/leonardo-green-jamms-g550-mmms-italy