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Construction of the two prototypes, the He 274 V1 and V2 did not commence until 1943. They were to have been built in France by SAUF at Suresnes, France, but the prototypes were not completed in time. The He 274 V1 was being readied for flight testing at Suresnes in July 1944 when the approach of Allied forces necessitated the evacuation of Heinkel personnel working on the project. Minor difficulties had delayed the flight testing and transfer of the aircraft to Germany, and orders were therefore given to destroy the virtually completed prototype. Only minor damage was actually done to the airframe of the He 274 V1, and repairs were begun after the Allied occupation.
The He 274 V1 was repaired by Ateliers Aéronautiques de Suresnes (AAS) and used by the Armée de l'Air (French Air Force) for several years as a high-altitude research plane. It was renamed the AAS 01A. The He 274 V2 was eventually completed as the AAS 01B, completed with the alternate choice of Heinkel-Hirth 2291 turbochargers, in place of the TK 11 units used by the He 274 V1's engines.

Controls

1-Lock control surfaces
2-Release Glider
3-Landing Lights

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