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Technical Specifications
Civil transport three-engined aircraft with low wings and fixed landing gear
Date first flight
Beginning of 1935
28,79 m 
19,20 m 
5,84 m 
Wing Area
Empty Weight
6755 Kg 
Max. Takeoff Weight
11000 Kg 
Cruising Speed
260 km/h. 
Maximum Speed
300 km/h
Climbing Speed
4000m in 17mn 30s 
Service ceilling
2025 kms
2 men
3 Radial Engines Hispano-Suiza 9V10 of 9 cyl of 575ch each
10 Passengers



3 Dewoitine D333 have been built since the date of the first flight in 1935.

To date, of the 3 aircrafts manufactured , 3 are listed in the list below :


On January 15, 1934, the dewoitine D.332 Emeraude crashes into the Morvan. This disaster will have consequences on the current design of the successors of the D332. The technical services review their specifications and require a load factor of 7 instead of the 5 requested until then. This requires a substantial strengthening of the structure of the aircraft, including a reinforced wing. The manufacturer took the opportunity to make other changes: a luggage compartment is added behind the central engine and at the request of Air France who wants to make flights Casablanca-Dakar non-stop, 3 additional tanks are added in the fuselage. These two modifications impose to lengthen the fuselage with respect to D.332. The wing undergoes a number of changes as well: the engines are close to the fuselage and their cowling is better. The 4 tanks are now installed in the wing and at the request of Air France, the shutters have been optimized to reduce the landing speed of 20km / h. With all these changes, the device took the name of Dewoitine D.333.

The Dewoitine D.333 appeared as a commercial three-engined aircraft at low wing with fixed landing gear of completely metallic construction. Its crew consisted of 3 people: two pilots and a Radio and the aircraft could carry 8 to 10 passengers. It was powered by 3 Hispano-Suiza 9Vd, 575 hp of 9 cylinder single star driving two-blade metal propellers fixed pitch It could carry a total of 4355l of gasoline which gave it a comfortable autonomy of more than 2000kms.

Air France ordered 3 aircraft, including the prototype.

These developments delay the project and it is only on January 17, 1935, that the prototype, registered F-AKHA makes its first flight. The tests are satisfactory, the reinforced wing making the D.333 more pleasant to pilot than the D.332, with however a longitudinal instability which will be corrected by the enlargement of the drift.

The prototype is delivered to Air France on May 4, 1935 under the final registration F-ANQA. The two following aircraft, D 333-1 F-ANQB "Cassiopé" and D 333-2, F-ANQC "Altair" flew respectively in May 1935 and March 1936.

The first commercial flights of the new aircraft began from May 1936, on the line Toulouse-Casablanca-Dakar. It was during one of these flights that the D.333 F-ANQA "Antares", caught in a violent storm, disappeared off Morocco on October 25, 1937 during the return journey: there was no survivors (5 people).

In December 1937, the two remaining D.333 were assigned by Air France on the lines of the South American network for the connection between Buenos Aires and Natal. The "Cassiopeia" was based in Rio de Janeiro, and "Altair" in Buenos Aires.

At the Armistice, the Argentine authorities, pushed by the United States, seize the D.333 and D.338 which are stored on the spot. The apparatuses will be sold at the end of 1943 to the Air Force Argentina, and integrated on January 17, 1944 under the numbers T-172, ex F-ANQB Cassiopée and T-173, ex F-ANQC Altair the 2nd Regiment of Transport, based in El Palomar, near Buenos Aires. They will remain in service probably until July 1946.


The Dewoitine D333 was built for Air France only in one version.



Éditions Lariviére :
- Les No13; 14; 15; 16 de la revue : Fanatique de l'aviation


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