A&P: airframe and powerplant
A/D: analog/digital
AADCCS: Area Air Defense Command and Control System
AASF: Advanced Air Striking Force
AASHTO: American Association of State Highway and Transportation Officials
ABD: Airborne Ballistics Division
ABMA: Army Ballistic Missile Agency
ABR: Available Bit Rate
AC: Air Conditioning
AC: Alternating Current
ACAAM: Air Courses of Action Assessment Model
ACARS: ARINC Communication Addressing and Reporting System
ACCIS: Allied Command and Control Information System
ACCISS: Automated Command and Control Intelligence Support System
ACE: Access Control Encryption
ACL: Access Control List
ACTS: Advanced Communications Technology Satellite
ACU: Antenna Control Unit
AD: Airworthiness Directive
ADAPT: Automated Decisionmaking and Program Timeline
ADC: Air Data Computer
ADCCP: Advanced Data Communications Control Procedures
ADDIS: Advanced Deployable Digital Imagery System
ADEOS: Advanced Earth Observing System
ADGE: Air Defence Ground Environment
ADIEC: Army Deployable Imagery Exploitation Capability
ADISS: Advanced Defense Intelligence Support System
ADL: Ada Design Language
ADM: Advanced Development Model
ADMS: Automatic Digital Message Switch
ADPE: Automatic Data Processing Equipment
ADPSSM: Automated Data Processing Systems Security Manual
ADPSSP: Automated Data Processing System Security Program
ADR: Accident Data Recorder
ADR: Aerospace and Defense Research
ADTLP: Army Doctrine and Training Literature Program
AE: Application Entity
AEF: American Expeditionary Forces
AEICC: Area Emergency Information Coordination Center
AETCAE: Army Europe Technical Control and Analysis Element