Since AAC seems to get taken down alot, there are MULTIPLE download links for it...

WeiYun/TenCent : https://share.weiyun.com/999fe20f00230a52bd93cd7016ee5688
FileDropper : http://www.filedropper.com/aacfor194and18cracked
Files.FM : https://files.fm/u/2smfpsrv#_

NOTICE: It has come to my attention that AAC 1.9.10 works on spigot 1.10, Use 1.9.10 for spigot 1.10