96 FDS definitions

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 
Flight Design and Scheduling 
Flight Design System 
Flight Dynamics Simulator 
Flight Dynamics System 
Functional Design Specifications 
Fire Dynamics Simulator 
FRED'S 
fault detection system 
Fedora Directory Server 
Fellow in Dental Surgery 
filter difference spectrometer 
Fire Detection System 
flexor digitorum superficialis 
Flight Data System 
Flight Deck Scrubber 
Flight Development System 
flight director system 
Flight Dynamics Software 
Flight Dynamics Support 
Fluid Density Sensor 
Fluid Distribution System