Installation:

1: Install this mod:
https://www.gtainside.com/en/gta5/aircraft/94877-concorde-add-on/

2: Extract BAC_sign_13 to "C:\Program Files (x86)\Steam\steamapps\common\Grand Theft Auto V\mods\update\x64\dlcpacks\concorde\dlc.rpf\x64\levels\gta5\vehicles\mq1vehicles.rpf\bac.ytd"