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.


In 1933 AVRO designed type 652, based upon specifications of Imperial Airways for a airplane for internal airline services.
Type 652 was built in the same construction as its Fokker contemporaries, that is a steel pipe construction covered with linen and a wooden wing. Its tail section was covered with aluminium.

First flight of the aircraft was in January 1935. Imperial Airways ordered three aircraft.
In May 1934 the British ministry formulated specification G.18/35 for a reconnaissance aircraft with a crew of three members. This should be based upon an existing design.
Avro presented a somewhat changed design AVRO 652A based upon the civil AVRO 652. It differed from the AVRO 652 in that it had straight windows, the possibility to carry a bomb load of about 45 kg internal and eight bombs of about 9 kg each under the wings and a standard armament of one fixed 7,7 mm Vickers machine gun in the nose and one 7,7 mm Lewis machine gun in the dorsal turret.
Avro was allowed to built a prototype, which would compete with the De Havilland DH-89 Dominie.
Its maiden flight was March 1935 and proved to be much better than the DH-89, so production of the Anson started.


Avro Anson Mk I:
December 1935 the first production aircraft, the Anson Mk. I, equipped with two Armstrong Siddeley Cheetah IX engines, was rolled out.
RAF Coastal Command squadron No.48 was the first squadron, operational on the first British military aircraft equipped with a retractable landing gear.
The Anson Mk I became the standard patrol and reconnaissance aircraft of both RAF as RAAF.
By the end of the thirties it became obsolete and to slow for it original task, so the Anson became the standard multi engine training aircraft.
>During the beginning of the war the Anson was a tremendous opponent. It proved to have a great resilience
Both Dutch squadron 320 and 321 Coastal Command were equipped with the Anson. It succeeded the old Fokker T-VIIIW. About 17 aircraft were used. The last one being discharged in 1941 from operational service. Several aircraft were still used by 320 squadron for training purposes.
A total of 6706 Anson Mk I were built.
Avro Anson Mk II/ AT-20:
The Mk II was designed as a training aircraft for multi engine training.
it was used for the training of radio-operators, navigators, gunners and pilots.
It differed from the Mk I in the moulded plywood nose, hydraulic powered landing gear and flaps and two Jacobs engines rated 330 hp each.
All Mk IIs were built in Canada by Federal Aircraft Ltd. Totally 1050 Mk II’s were built, Fifty of them went to the USA as AT-20, equipped with Jacobs R-915-7 engines.
Avro Anson Mk III:
The Mk. III differed from the Mk II in being equipped with two Jacobs L-6MB engines. These aircraft, a total of 559 examples, were built, also in Canada.
Avro Anson Mk IV:
The Mk IV was almost identical to the MK III. It differed only in that is was equipped with two Wright R-975-E3 engines. A total of 223 aircraft were built.
Avro Anson Mk V:
The wooden Mk. V was a Canadian development of the Mk I. of which 1070 aircraft were built. The oval cabin windows of the civil aircraft returned and the aircraft was equipped two Pratt & Whitney R-985-AN-12B or -14B engines, rated 450 hp each.
Avro Anson Mk X:
The Uk built Mk X was in fact a Mk I with an enforced cabin floor. It was designed for transport purposes. Totally 103 examples were built.
Avro Anson Mk XI:
In July 1944 a version for passengers and ambulance was released. The fuselage was enlarged and the ceiling was raised, enlarged cabin windows were added. The type was equipped with two Armstrong Siddeley Cheetah XIX engines. Ninety examples were built.
Avro Anson Mk XII::
This type was developed from the Mk XI and equipped with two Armstrong Siddeley Cheetah XV engines, rated 420 hp each. 254 examples were built in two variant, Mk XII series 1 with the original wooden wings and Mk XII series 2 with metal wings.


Post war versions

After the Second World War the production was continued for a while.

Anson C.18
a aircraft for patrol and police duties for Afghanistan and India,
Anson C.19
a transporter built for the RAF and the Avro Nineteen, the civil version of the C.19.
Anson T.20
a trainer for bombers with clear nose, to be used in Rhodesia;
Anson T.21
which was equal to the T.20 but a solid nose
Anson T.22
a radio trainer for the RAF.


Technical Information
Length: 12,88 m Wingspan: 17,22 m
Height: 3,99 m Wing area: 43,1 m2
Empty weight: 2435 kg Max. start weight: 3900 kg
Max. speed: 320 km/hr Cruising speed: 254 km/hr
Rate of climb: 228 m/min    
Range: 1060 km Service ceiling: 5791 m
Engine type: Two Armstrong Siddeley Cheetah IX rated 350 hp each.
Crew: Four (when used as patrol aircraft).
Armament: Patrol aircraft: two machine-guns; bombs.