Production and Operation
A batch of eight aircraft was, however, ordered by the Institut Géographique National (IGN), based at Creil airfield to the north of Paris. The aircraft's wing design made it ideal for long-duration, low-speed flight, ideal for aerial photography and survey work. These machines were designated HD.34 and were fitted with an extensively glazed nose and an off-set retractable nosewheel. They flew with IGN between the late 1950s and mid 1970s. A single example remains airworthy, operated by the Association des Mécaniciens-Pilotes d'Aéronefs Anciens.
Read more about this topic: Hurel-Dubois HD.31
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