Pierre Deley (1 November 1893 – 27 February 1981), was one of the pioneering pilots for the Aéropostale company.
He obtained his fighter pilot's licence in 1917 and finished World War I with six aerial victories.
When Guillaumet disappeared in the Andes, Deley was one of the pilots who searched for him before he was eventually rescued.
The 1995 IMAX film Wings of Courage (director: Jean-Jacques Annaud) traced the career of Guillaumet.
Marseillan author, René Angel, has written a biography: Pierre Deley, pionnier de l'Aéropostale.