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.

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General Dynamics F-16 Test Group

The Test Group F-16 has been established as a special unit within the Royal Netherlands Air Force to perform special test flights for the F-16. Initially, this was done by the squadrons individually, but soon it became apparent to use a separate staff and device for that purpose. In particular, tests were conducted which USAF did not do.

In 1984, F-16A, the 306 squadron J-646 was fitted with a special wiring for these test purposes. The aircraft soon received the nickname "Orange Jumper" because of the orange color of this special wiring.

Later, a F-16B, the J-653 of 312 squadron, was modified.

One of the first tests performed by the group was the AGM-M65D Maverick, which was conducted in 1985-1986. However, this turned out to be unsuccessful. A later version. The AGM65G proved to be better.

Between 1986 and 1987 an integration test for night flights was conducted. Use was made of FLIR, a larger HUD, a radar altimeter, customized cockpit lighting and NVG (Night Vision Goggles).

At that time The J-646 was rejected by the group and converted into a normal configuration. F-16B J-655 was then added to the group.

The results of the tests were finally applied at the introduction of the MLU in 1998.

At the time of introduction of the MLU, both aircraft were returned to normal standards. As a replacement, F-16BM J-066 was fitted with the orange test equipment. The device also received an orange kangaroo on the tail and was based on Leeuwarden air base.


GD F 16 MB Orange Jumper AKleijn
A model of a F-16B F-16 MLU Flight Test, built by Adri Kleijn.
Mr. Kleijn used Daco set 7220 to modify the standard kit.



Orange Jumper J-066, photographed on September 2, 2000 at the Open Day at air base Leeuwarden



Orange Jumper J-066, photographed on June 16, 2006 at the Open Day at air base Leeuwarden.


GeneralDynamics F16A TestFlight, J-646 with Test Group Badge.
GeneralDynamics F16B TestFlight, J-653 with Test Group Badge.
GeneralDynamics F16B TestFlight, J-653 with Test Group Badge and special tail markings because of the Open Day RNlAF June 1995 at air base Volkel.
GeneralDynamics F16B MLU Test Flight, J-066 wiht Kangooroo badge.
GeneralDynamics F16BM OrangeJumper 2 SMALL
GeneralDynamics F16B MLU Test Flight, J-066 with the current Orange Jumper badge.


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Decals & Modelling Add-On

  • Daco Products
    • Set asd7220: F-16B MLU Fighting Falcon (KLu F16 Flight test group J-066 `Orange Jumper`
    • Set asd7222: F-16 Reinforcement Plates

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Decals & Modelling Add-On

  • Daco Products
    • Set asd4820: F-16B MLU Fighting Falcon (KLu F16 Flight Test Group J-066 `Orange Jumper`
    • Set asd4822: F-16 Reinforcement Plates