Guynemer failed to return from a
combat mission on
11 September, 1917.
At 08:30, with young pilot Bozon-Verduraz, Guynemer took off in his Spad XIII S.504 n°2, "Vieux Charles". His mission was to patrol the Langemark area. At 09:25, near Poelkapelle, Guynemer sighted a lone Rumpler, a German observation plane, and dived towards it. Bozon-Verduraz saw several Fokkers above him, and by the time he had shaken them off his leader was nowhere in sight, so he returned alone. Guynemer never came back.
Neither the wreckage of his airplane, his body, nor his personal effects were ever found, but the Germans announced that he had been shot down by Lt. Kurt Wissemann of Jasta 3, who in turn was killed in action 17 days later. French schoolchildren of the time were taught that Guynemer had flown so high he couldn't come back down again. At the time of his death, he had achieved 53 victories. In all, he had been shot down seven times. It is not clear if he was killed in the crash of his plane or if he survived only to be shot on the ground in No-Man's-Land. Some speculate that his aircraft may have been blown apart by
artillery shells.