52Section 2TAWS OperationTerrain/Obstacle Database Areas of CoverageThe following describes the area of coverage available in each database. Regional definitions maychange without notice.NOTE: Obstacles 200’ and higher are included in the Obstacle Database. It is very impor-tant to note that not all obstacles are necessarily charted and therefore may not be con-tained in the Obstacle Database.Navigation DatabaseAs explained in the “Premature Descent Alerting (PDA)” section (page 56), Garmin TAWS PrematureDescent Alerting (PDA) algorithms utilize data contained in the navigation database. It is therefore impor-tant to also have the latest navigation database installed to ensure correct TAWS alerting.Worldwide (WW):Latitudes: S60 to N75Longitudes: W180 to E180Americas (AME):Latitudes: S60 to N75Longitudes: W180 to W30Atlantic (ATL):Latitudes: S60 to N75Longitudes: W30 to E90Pacific (PAC):Latitudes: S60 to N75Longitudes: E60 to E180United States (US):Limited to the United States plus some areas ofCanada, Mexico, Caribbean, and the Pacific.
