Airborne File Server 
Air Force Station 
Andrew File System 
Air Facility System 
Aeronautical Fixed Service 
Automatic Flight System 
Aerodrome Fire Service 
AIRS Facility Subsystem 
Auto Flight System 
Active Federal Service 
Active Fahrwerks Stabilierung 
Advanced Flying School 
Advanced Freephone Service 
Acoustic Firing System 
Advanced Flight Simulator 
Agency Filing Scheme 
Air Facility Subsystem 
Air Facility Sub-System 
Air Force Specialty 
Air Force Standard 
Airways Facilities Sector 
Alaska Fire Service 
American Fisheries Society 
atomic fluorescence spectrometry 
atomic fluorescence spectroscopy 
Audio-Frequency Shift 
Automation File Server 
auxiliary feedwater system 
a distributed product of transarc 
Academy of Financial Services