X-Plane Armee de l'Air DHC-6. The French Air Force (French: Armee de l'Air), literally Army of the Air is the air force of the French Armed Forces. It was formed in 1909 as the Service Aeronautique, a service arm of the French Army, then was made an independent military arm in 1934. This livery is for Aero Pedro's DeHavilland Twin Otter long nosed version (DHC63_TWIN_OTTER_LN_V970-_2DV2_7-3DV2_3.ZIP). This is the older style livery, the new one is very plain. Simply unzip and place the created folder into the Otters 'Liveries' directory. By Robert Maheu.