The Gulfstream G100, formerly known as the Astra SPX, is an Israel Aircraft Industries-manufactured twin-engine business jet, now produced for Gulfstream Aerospace. The United States Air Force designation for the G100 is C-38 Courier. Production of this aircraft began in 2002 and continued until 2005. The Astra evolved from the Rockwell Jet Commander aircraft, for which IAI had purchased the manufacturing license in 1968, and the IAI Westwind. The Astra wing design was modified and with a completely new fuselage created the Galaxy (later the Gulfstream G200) business jet during the 1990s.
This variant was renamed G100 from September 2002 following Gulfstream's acquisition of Galaxy Aerospace, which held the Astra certifications, in May 2001. IAI builds G100s in Israel and then flies the completed airframes to the United States for interior outfitting. The newest variant, the G150, is powered by two fuel-efficient Honeywell TFE731-40AR-200G turbofan engines. Each engine produces 4,420 lbs of thrust, both supplied with full authority digital engine control (FADEC). Their inspection interval is 6,000 hours.