An additional 550 were manufactured by licensees of the helicopter including Westland Aircraft, the SNCASE in France and Mitsubishi in Japan.
SNCASE |
Despite the Armistice, development continued, with a significantly revised third prototype being built by the Société nationale des constructions aéronautiques du Sud-Est (SNCASE) at Marignane, the HD.731.01.
French Air Force operated at least two He 177 A-3s left behind by the Germans and rebuilt by SNCASE at Blagnac.
The Germans were not especially interested in this airplane, but on 21 May 1943, Luftwaffe requested Regia Aeronautica to hand over 39 Lioré et Olivier LeO 451, captured by Italians troops in the SNCASE factory in Ambérieu-en-Bugey (Lyon).