The SHAA didn't exist anymore officialy. All historical services of the 3 arms fusionned last year and the SHAT, SHAA and SHM became departments of the new Service Historique.
The physical adress didn't change:
Service historique de la Défense
Château de Vincennes
Avenue de Paris
94300 VINCENNES
The postal adress change:
Service historique de la Défense
département de l'armée de l'Air
Château de Vincennes
BP 110
00481 ARMEES
And there is an e-mail:
archives@shaa.claranet.fr
By the way, I hope to there next week if my job is allowing, so maybe I can help you.
Laurent