The Gulfstream IV was introduced in 1985 and the biggest differences from the GIII are FAR 36 Stage 3 compliant Rolls Royce Tay 611-8 engine, a four foot longer cabin and 340 nautical miles extra range.
- Aircraft Library
- 1979 - 1988
The Westwind started out as the Aero Commander 1121 Jet Commander. When Rockwell (owner of Aero Commander) acquired North American Aviation (owner of Sabreliner) in






