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The Gulfstream G100 was originally known as the IAI Astra SPX, a twin engine business jet manufactured by Israel Aerospace Industries. The Astra had entered service in August 1994 and was renamed G100 in September 2002, after ownership of the type certificate was transferred to Gulfstream earlier that year.
The G100 had 4,250 lbf Honeywell TFE-731-40R-200G turbofan engines and was fitted with winglets.
In September 2002, Gulfstream announced the improved G150, based on the G100 but with a wider and longer cabin, a revised nose and uprated 4,400 lbf Honeywell TFE731-40AR engines. It was certified by the FAA in late 2005.
Production of the G100 was discontinued following certification of the G150. IAI continued to manufacture G150s in Israel and the completed airframes were then flown to the U.S. for interior outfitting.
In September 2016, Gulfstream announced the end of the 12 year production run, with delivery of the final aircraft in mid 2017.
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| World fleet | Charter fleet | Typical pax | Cabin volume | Cruise | Range | Years | |
| Israeli Aircraft 1125 | ●● | ● | ● | ●●●●●●●●● | ●●●●●●● | ●●●●●●●● | ●●●●●●●●●● |
| 1125 Astra SP | ●● | ● | ● | ●●●●●●●●● | ●●●●●●● | ●●●●●●●● | ●●●●●●●●●● |
| Israeli Aircraft 1125SPX | ●● | ●● | ● | ●●●●●●●●● | ●●●●●●● | ●●●●●●●● | ●●●●●●●●●● |
| Gulfstream G100 | ●● | ● | ● | ●●●●●●●●● | ●●●●●●● | ●●●●●●●● | ●●●●●●●●●● |
| Gulfstream G150 | ●●● | ●● | ● | ●●●●●●●●● | ●●●●●●● | ●●●●●●●● | ●●●●●●●●●● |
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| 14/11/2022 | EASA: 10080448. ●●●●●●●●●●
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| June 14, 2024 | Southeast Aerospace secures international approvals for Garmin IVSI and ESI |
| December 28, 2023 | Reynolds Jet adds Gulfstream G150 to charter fleet |
| January 20, 2023 | Jet It looks to expand Gogo Avance L3 fleetwide |
| March 21, 2022 | Peregrine improves G150 flap/slat operation |
| February 28, 2022 | Thomas Global upgrades drop-in LCD display for Pro Line 4 |
| December 13, 2021 | Jet It adds range with Gulfstream G150s |
| May 14, 2021 | ACTSI trains up its staff on Gulfstream aircraft |
| October 6, 2020 | C&L signs with Thomas Global for CRT display |
| June 19, 2020 | Tyrol offers contamination-free transport for all passengers |
| May 17, 2020 | EAP defers minimum hour requirement to help operators |
| February 24, 2020 | Southern Sky says Astra has star quality |
| December 13, 2019 | Duncan delivers hydrographic countertops |
| October 22, 2019 | St. Louis hosts dedicated team for midsize Gulfstreams |
| November 1, 2017 | Gulfstream: Highlights from 50 years since GII certification |
| March 11, 2013 | Me & my aircraft – Midsize jets: Long-legged Latitude and Legacy 500 will breathe life into the midsize sector |
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