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Technical Specifications
Mono-seater for training with low wing and fixed landing gear
Date first flight
January 1936
7,70 m 
7,82 m 
1,90 m 
Wing Area
9 m2 
Empty Weight
777 Kg 
Max. Takeoff Weight
1004 Kg 
Cruising Speed
330 km/h. 
Maximum Speed
378 km/h at 2000m 
Climbing Speed
10,5 m/s
Service ceilling
1 Pilot
1 Engine Renault 6Q-03 of 220 Hp at 2000m and 2500tr/mn
No Armament



18 Caudron C690 have been built since the date of the first flight in January 1936.

To date, of the 18 aircrafts manufactured ,18 are listed in the list below :



The company Caudron, with its success in competitions such as the Deutsch Cup, is trying to get an order from the Air Force for a light training aircraft. The company offers the Caudron C720 late 1935, but this aircraft, under-powered (140hp), does not attract the attention of the military. The Caudron C690 replaces it, powered this time by a Renault GQ-03 220cv. The unit is built entirely of wood according to a process dear to Caudron.

The prototype No 01 made its first flight in early 1936 under the registration F-AOLM. The perfromances are this time, the appointment but the device is considered difficult to drive, including a lack of stability. Following the various tests, some modifications are made: the surface of the drift is reduced and the fuselage is thinned in its rear part. During the new tests in this configuration, the prototype n ° 02 crashes on takeoff. His pilot, René Paulhan is killed: wearing boots too wide, he couldn't master his aircraft. This one not being in question, the tests continue in the hands of different pilots. At the end of this series of tests, at the end of 1938, the C690 joined the Caudrons workshops to undergo modifications: Addition of a 5 ° dihedral on the wings to improve its stability, adding a leading edge promote lift at low speeds.

The testers will emit a reserved notice on the C690: it is considered too delicate, but an order of 15 machines was passed in April 1938. The delivery of the standard equipment will spread from April to May 1939 to the flying schools . May 10, 1940, there are 11 devices present. Faced with the German advance, schools are turning south, especially to Toulouse, and Armisitice, 6 Caudron C690 are listed. These devices will be seized by the Germans in November 1942. Only the C690 No. 9 will survive the conflict : repair in the workshops of Issy-Moulineaux, it will remain hidden until release. Rehabilitated, he took off again on April 12, 1945, but his track was quickly lost.

The Caudron C690 generated interest from foreign countries. Both prototypes performed demonstrations before Russian and Japanese commissions in particular. The Russians wish to buy a copy, but Caudron, fearing to lost his knowledges, accepted only if a Manufacture License was acquired. After agreement, the Russians realized a Russian version of the C690. It differed from the French version in particular by adding a tail wheel. At the tests it proved more unstable than the French version and there was no continuation.

The Japanese also buy a copy for the Navy, but there is no trace on the course of this device in Japan.

The Caudron C690 was a modern, high-performance aircraft, and even though the aircraft was tricky to fly, it allowed the apprentice pilots to train on a demanding aircraft, preparing them for the piloting of the modern planes of fight which began to arrive in units



Caudron C690 knew only a single version.


1 ) _ Editions LELA PRESSE ; Avions No93 - 94
- Le Caudron 690



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