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on the Gulfstream G400/G450
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The large cabin, long range G400 was introduced by Gulfstream at the 2002 NBAA convention as a replacement for, or revised aircraft description of, the GIV. As manufacture of the GIV series was halted on 2 December, 2002 so production of the G400 began.
First deliveries for entry into service were scheduled for 2003, but only 23 were manufactured and production was phased out shortly after.
Essentially the G400 was a slightly longer GIV with improved weight capability thanks to some strengthening of the landing gear and adjustments to the wing and tail. A hydro-mechanical system replaced the GIV wire brake system while damping of the landing gear system ensured smoother landings and an increased landing weight.
The G400 has a range of 4,100 nm at speeds up to Mach 0.88. It is powered by two 13,850 lbf-rated Rolls-Royce Tay 611-8 engines, and the OEM included a Gulfstream five year service and training package as well as a competitive warranty.
In October 2003 the Tay 611-8C-powered G450 was introduced at NBAA following an unannounced maiden flight. Development had commenced in 2001 under the name GIV-X, and four pre-production units flew between 30 April and 18 September that year.
After more than 1,850 hours of flight testing the FAA granted certification on 12 August, 2004, followed by EASA on 19 November that year. FAA production certification was granted on 29 November, 2004 and the first customer delivery was carried out on 7 May, 2005.
With effect from 1Q2011, the maximum take off weight was increased from 33,521 kg to 33,838 kg and the maximum ramp weight from 33,702 kg to 34,020 kg. This meant the G450 could carry 12 passengers at full fuel load.
The FAA certified Stage 4 noise compliance on 3 November, 2010, while the CIS granted certification in January 2006. Transport Canada approved operations to 13,715m in January 2011, previously restricted to 12,500m.
The decision to end G450 production was made on 21 October, 2016 with final delivery to a customer on 20 January, 2018. In total, 354 G450s were produced.
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| World fleet | Charter fleet | Typical pax | Cabin volume | Cruise | Range | Years | |
| Gulfstream G400 | ●● | ● | ●● | ●●●●●●●●●● | ●●●●●●● | ●●●●●●●● | ●●●●●●●●●● |
| Gulfstream G450 | ●●● | ●● | ●● | ●●●●●●●●●● | ●●●●●●● | ●●●●●●●● | ●●●●●●●●●● |
| September 26, 2022 | ACTSI completes G450 192-month inspection |
| August 19, 2022 | Chantilly Air adds G450 to managed fleet |
| May 29, 2022 | TAG extends pilot training agreement with CAE until 2025 |
| April 19, 2022 | NetJets' foray into China sees G450s join AmberNet |
| April 11, 2022 | Customer installations take off on SD's Plane Simple antenna system |
| March 1, 2022 | Metrojet HK bolsters MRO approvals |
| November 5, 2021 | Duncan to modify Avance L5 STCs to include Gogo 5G |
| September 9, 2021 | ACTSI gains FAA approval for GIV-X 192 month inspections |
| September 2, 2021 | Duncan pumps up the volume with audio systems |
| August 26, 2021 | Static display lineup unveiled for ACE 2021 |
| August 26, 2021 | Jet Aviation provides support following Turkish approval |
| August 26, 2021 | Jet Edge continues to drive value with fleet additions |
| July 23, 2021 | QTA inlet replacement barrel guards against corrosion |
| June 23, 2021 | Flexjet calls on Viasat to install high bandwidth IFC |
| May 14, 2021 | ACTSI trains up its staff on Gulfstream aircraft |
| May 10, 2021 | Gulfstream jets to benefit from True Blue inverters |
| December 21, 2020 | G450 owners can save with West Star Collins deal |
| December 7, 2020 | Jet Aviation demonstrates ‘breadth and scope’ with Falcon 4C |
| November 8, 2020 | Duncan drives home DART deal and Gogo for Gulfstream |
| November 2, 2020 | ACTSI gets its act together for 8A and 8C Checks |
| October 25, 2020 | Four jets come onboard the Clay Lacy roster |
| October 3, 2020 | AMAC refurbishes Gulfstream, Bombardier and Boeing jets |
| August 24, 2020 | Western Jet leads the way to LuxStream on Gulfstreams |
| August 16, 2020 | Gulfstream boosts cabin experience with purer air |
| August 11, 2020 | QTA quietly goes about installing inlet cowls |
| August 11, 2020 | Jet Flight Service performs ultra-heavy C-checks |
| August 4, 2020 | JF Service in the clear for Gulfstream maintenance |
| July 5, 2020 | Vertis adds beguiling Gulfstream to virtual portfolio |
| May 4, 2020 | ACTSI passes muster for FAA upgrade |
| February 23, 2020 | Duncan Aviation completes Avance L5 STCs |
| January 13, 2020 | Phenoms and Gulfstreams gain Concorde battery STC |
| November 10, 2019 | Eight more jets join Gama's US managed fleet |
| June 25, 2019 | Vision enhancement approved for in-service Gulfstreams |
| April 30, 2019 | Milestone flight hours achieved by RR engine |
| March 26, 2019 | AMAC wins Basel maintenance contracts |
| February 11, 2019 | JetWorx expansion includes maintenance for G450 |
| January 15, 2019 | JFS completes first Embraer C-check in Riga |
| January 7, 2019 | Keystone gets bang for buck with Gulfstream pair |
| December 4, 2018 | Gogo Avance L5 certified for current Gulfstreams |
| October 2, 2018 | Hong Kong maintenance company adds Aruba approval |
| June 12, 2018 | JFS opens in Riga and recruits Budin |
| May 16, 2018 | Nomad expands long range options |
| February 8, 2018 | Emperor adds G450 after spike in Russian traffic |
| November 1, 2017 | Gulfstream: Highlights from 50 years since GII certification |
| August 31, 2017 | UAS assists Deer Jet with G450 management |
| November 9, 2015 | Me & my aircraft-Long range and Large jets: Long range and large jets bring the world closer for discerning executives |
| July 7, 2015 | Gulfstream enhances G550 and G450 connectivity |
| February 12, 2015 | Fast growing Elit'Avia spans three continents |
| February 12, 2015 | Jet Aviation adds Gulfstream pair to Middle East fleet |
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