First, Download model from this link : https://www.gta5-mods.com/player/air-force-1

Second, open OpenIV
and put everything in folder AIR FORCE ONES and G-dragon into :  GTA V / x64.rpf / models / cdimages / streamedpeds_players.rpf / player_one 

Enjoy!!

Thanks to officialjdixon for making model