American Optometric Association American Osteopathic Association Administration on Aging amphibious objective area Airborne Optical Adjunct angle of attack Airport Operations Area Amphibious Operations Area Analysis of Alternatives Air Operations Area Airport Operators' Association Angle of Arrival Annual Operating Agreement Abort Once Around Acide OxyaminoAcétique Aegis Open Architecture age of acquisition Airport Operators Association American Orthopsychiatric Association Amphibious Operating Area Assembly Operations Assessment At, or Above Australian Orthopaedic Association Abbreviated Operational Assessment Abort-Once-Around ACARS Over AVLC Accident Officers Association Ace of Aces Activity On Arrow Advanced Optical Adjunct Advice of Allowance Advise Of Arrival Aerodrome Owners Association Age of Attraction Airport Operation Area Alcon Servicios Aereos, S.A. de C.V. Allen Osborne Associates, Inc. Allen Osbourne Associates Alpha Omega Alpha alpha-amino oleic acid