Appendix B: Acronyms
FPA—Flight Path Angle
FPV—Flight Path Vector
FSB—Flight Standardization Board
FSDO—Flight Standards District Office
FSL—NOAA Forecast Systems Laboratory
FSS—Flight Service Station
G
GBAS—Ground-Based Augmentation System
GCA—Ground Controlled Approach
GCO—Ground Communication Outlet
GDP—Ground Delay Programs
GDPE—Ground Delay Program Enhancements
GLS—Ground Based Augmentation System Landing System
GNSS—Global Navigation Satellite System
GPS—Global Positioning System
GPWS—Ground Proximity Warning System
G/S—Glide Slope
GS—Ground Speed
GWS—Graphical Weather Service