Family Day System 
Flight Director Systems 
Fixed Distributed System 
Flight Demonstration System 
Flight Data Subsystem 
Fire Detection and Suppression 
Fire Direction System 
Flight Display System 
Functional Design Specification 
Functional Design Specifications 
Fire Dynamics Simulator 
Flight Design and Scheduling 
Flight Design System 
Flight Dynamics Simulator 
Flight Dynamics System 
FRED'S 
fault detection system 
Fedora Directory Server 
filter difference spectrometer 
Fire Detection System 
Flight Data System 
Flight Deck Scrubber 
Flight Development System 
flight director system 
Fluid Density Sensor 
Fluid Distribution System 
Frequency-Division Switching 
African Medical and Research Foundatio… 
Facility Data Standard 
FactSet Research Systems Inc.