Adjutant André Julien Chainat was a French World War I flying ace credited with eleven aerial victories.

On 22 April 1914, he transferred to the 2eme Groupe d'Aviation and was posted to Escadrille B4, (the 'B' denoting the unit's use of Bleriots), on 20 July 1914, just in time for the beginning of the war.

He began using a Nieuport fighter; he added the motto L'Oiseau Bleu (Blue Bird) to the squadron markings on its fuselage.

[3] From March to September 1916, he continued to score victories, including sharing victims with Georges Guynemer and Alfred Heurtaux.

(Chevalier de la Légion d'honneur citation, 3 August 1916)[1][4] Médaille militaire "Pilot of great skill and bravery.