Nederlandse Modelbouw en Luchtvaartsite

Dutch Modelling and Aviation

In Memoriam

Klaas Willem Jonker
† April 30, 2018

On Monday 30 April 2018, Wilko Jonker died after a long illness at the age of 58. He leaves behind a wife and two children. The Dutch military aviation and plastic modeling were his hobby and on this website he shared all the knowledge he has collected over the years. His hobby has been able to distract him from the persistent disease in his body until the last week of his life. The contacts with other hobbyists were a major support for him.

This website will be maintained by different people for as long as possible, so that other enthusiasts can continue to benefit from extensive content.

Gulfstream Aerospace G1159C IV


The Gulfstream IV finds its origin in a large family of business twinjets, developed and built by Gulfstream.
The development of the Gulfstream IV starts in March 1983 in cooperation with Grumman. It was an extended and improved version of the Gulfstream III.
The wings was partially redesigned in order to get a large range and aerodynamic improvements.

The prototype made its first flight in September 1985.

Production started in 1987 with construction-number 1000. From construction-number 1214 an operated version was released under the designation GIV-SP.

Later the type-designation was changed in G400.


released in 2002 for short range.
a version of the GIV-SP, initial designation GIV-X. With one foot extended version with front section and cockpit of the Gulfstream G550. The G450 production started in 2004. The G350 was the short range version
US Army version of the GIV
US Navy version
a GIV-SP used by the USAF as VIP plane
US ARMY designation for a GIV-SP used as VIP plane


Technical information
Length: 26,92 m Wingspan: 23,72 m
Height: 7,45 m Wing area: 88,3 m2
Empty weight: 16100 kg Max. start weight: 33200 kg
Max. speed: 977 km/hr Climbing speed: 1220 m/min
Cruising speed: 850 km/hr    
Range: 13716 m Service ceiling: 7815 km
Engine type: Two Rolls Royce Tay Mk. 611-8 rated 61,6 kN each.
Crew: Two men
Armament: None
Notes Maximum of 16 - 19 passengers