AQHA Headquarters Reopens for Appointments AQHA Headquarters Reopens for Appointments The American Quarter Horse Association Headquarters in Amarillo is reopening to customers by appointment only, beginning April 5. The AQHA Member Experience Team will continue to comply with all local, state and federal guidelines and modify guidelines and appointment availability as needed. text size March 12, 2021 | AQHA Services , News and Publications | Customer Service , AQHA Memberships , American Quarter Horse Association (AQHA) The American Quarter Horse Association Headquarters in Amarillo will reopen for appointments only on Monday, April 5, pending local, state and federal mandates. The AQHA Member Experience Team will assist customers with AQHA business including, but not limited to, registrations, transfers, memberships, reviewing the status of your AQHA work and more!