A&L: Approach and Landing
AA: Airplane Avionics
AA: air-to-air
AAFE: Advanced Applications Flight Equipment
AAL: above aerodrome level
AB: Avionics Bay
ABD: Airborne Ballistics Division
ABETS: Airborne Beacon Test Set
ABI: Avionics Bus Interface
ABL: Aircraft-Based Laser
ABLE: Airborne Laser Evaluation
ABMCP: Airborne Military Command Post
ACA: Altitude Controller Assembly
ACAP: Advanced Computer Airframe Program
ACARE: Advisory Council for Aeronautics Research in Europe
ACE: Attitude Control Electronics
ACEL: Air Crew Equipment Laboratory
ACEU: AeroControl Electronics Unit
ACIP: Aerodynamic Coefficient Identification Package
ACME: Attitude Control and Maneuvering Electronics
ACS: Aft Crew Station
ACS: Altitude Control and Stabilization
ACU: Avionics Cooling Unit
ACUO: Avionics Cooling Unit Operator
AdAeS: Advances in Aeronautical Sciences
ADFRF: Ames/Dryden Flight Research Facility
ADR: Aerospace and Defense Research
AE&AT: Aircraft Engineering & Aerospace Technology
AET: Aerosurface End-to-end Test
AFA: Airframe Assembly
AFAPL: Air Force Aero Propulsion Laboratory
AFC: Automatic Flight Control
AFCAC: African Civil Aviation Commission
AFCS: Automatic Flight Control System
AFD: Aft Flight Deck
AFD: Assistant Flight Director
AFDE: Aft Flight Deck Equipment
AFDO: Aft Flight Deck Operator
AFDR: Ascent Flight Design Review
AFFDL: Air Force Flight Dynamics Laboratory