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.

Handley-Page O/400


In December 1914 Handley Page received an order of the Royal Navy to develop a bomber with a large range.
The result was a twin engine biplane with a wing span of 30 meter.
It made its first flight in December 1915. After some improvements the aircraft entered production as O/100 and 46 examples were built.

The success of the O/100 resulted in the development of an improved version with more powerful engines, new bomb aiming equipment. Of this type more than 400 examples were built under the designation O/400. In the US 100 examples were built by the  Standard Aircraft Corporation.


  • O/100: original version with two 260 hp Rolls Royce Eagle II;
  • O/400: improved version with two 360 hp Royce Eagle;
  • O/7: Export version for China for transport of fourteen passengers;
    • O/11: Version of the O/7 for transport of passengers and freight.
  • O/10: Version for twelve passengers.


Technical information
Length: 19,15 m Wingspan: 30,48 m
Height: 6,71 m Wing area: 153 m2
Empty weight: 3864 kg Max. start weight: 6073 kg
Max. speed: 156 km/hr Climbing speed: - m/min
Cruising speed: - km/hr    
Range: 1120 km or maximum of 8 hours Service ceiling: 2590 m
Engine type: Two Rolls Royce Eagle VIII rated 345 hp each
Crew: -
Armament: Two nose mounted Lewis .303 inch machine guns; one or two .303 inch Lewis machine guns on top of fuselage. Maximum bomb load of 8 x 93 kg; 16 x 42 kg or one 615 kg.