The Gulfstream 100 was formerly known as the Astra SPX.
When General Dynamics acquired the Astra models, it was renamed the Gulfstream 100. Compared to the Astra SP, it has more powerful and efficient Honeywell TFE 731-40 engines, in addition to winglets and Collins Pro Line 4 avionics.
The 1125 Astra is based on the Westwind II fuselage and tail and is mated with an all-new high-speed swept wing that was produced initially without winglets. The new wing was repositioned low on the fuselage and this, combined with reshaped fuselage frames, increases headroom by 8 inches. Other changes include a lengthened nose for greater avionics space and more extensive use of composites.
The Astra SP replaced the original 1125 Astra in production. The SP was first announced in 1989 and featured a revised cabin interior, upgraded avionics, electronic flight instrument system cockpit and some minor aerodynamic refinements.
The first production Astra flew in March 1985, the Astra SPX entered production in 1996, and Gulfstream acquired the program in 2001.
