A&CO: Activation and Checkout
A&COTA: Assembly and Checkout Technical Analysis
A&EM: Assembly and External Maintenance
A&R: Assembly and Recycle
A&R: Automation and Robotics
A&T: assembly and test
A&TA: Assembly and Test Area
AA: Accelerated Assembly
AAE: American Association of Engineers
AASTOM: Association for the Advancement of Science and Technology of Malawi
ABE: Air-Breathing Engine
ABEC: Annular Bearing Engineers' Committee
ABES: Air-Breathing Engine System
ABS: Acrylonitrile Butadiene Styrene
ACCM: Austrian Center of Competences in Mechatronics
ACF: Automated Control Function
ACIF: Australian Construction Industry Forum
ACM: Aircraft Maintenance Engineering
ACPL: Assembly Component Parts List
ACPM: Attitude Control Propulsion Motor
ACR: Austrian Cooperative Research
ACSE: Automatic Control and System Engineering
ACTAp: Automatic Control Theory Applications
ACTE: Approvals Committee for Terminal Equipment
ACTIS: Amorphous Carbon Treatment on Internal Surface
ADAMS: automated dynamic analysis of mechanical systems
ADI: Applikon Dependable Instruments
ADN: Autodesk Developer Network
AeCM: Aerospace Composites Materials
AEI: Applied Electronics & instrumentation Engineering
AEM: Acoustical Emission Monitoring
AeMat: Aerospace Materials
AES: American Electrochemical Society
AFBMA: Anti-Friction Bearing Manufacturers Association
AFC: Alkaline Fuel Cell
AFTA: Acoustic Fatigue Test Article
AGMA: American Gear Manufacturer's Association
AICE: American Institute of Chemical Engineers
AIChE: American Institute of Chemical Engineers
AIH: Acoustical Imaging and Holography