Garmin GTN 625 Pilot's Manual page 19

10.2.4 Terrain Database Areas of Coverage ..................................... 10-3
10.2.5 Obstacle Database Areas of Coverage .................................. 10-4
10.3 Terrain Proximity ................................................................................ 10-5
10.3.1 Displaying Terrain Proximity ................................................. 10-6
10.3.1.1 Terrain Page 120° Arc or 360° Rings .................................... 10-7
10.3.1.2 Display Flight Plan on Terrain Page ....................................... 10-7
10.3.1.3 Display Terrain or Obstacle Legend ....................................... 10-7
10.3.2 Terrain Limitations ............................................................... 10-8
10.4 TAWS-B (Optional) ............................................................................. 10-8
10.4.1 TAWS-B Requirements ......................................................... 10-8
10.4.2 TAWS-B Limitations ............................................................. 10-9
10.4.3 Computing GPS Altitude for TAWS ....................................... 10-9
10.4.4 Baro-Corrected Altitude Versus GSL Altitude ....................... 10-10
10.4.5 Using TAWS-B ................................................................... 10-10
10.4.6 Displaying TAWS-B Data .................................................... 10-11
10.4.7 TAWS-B Page .................................................................... 10-12
10.4.7.1 Terrain Page Layers ............................................................ 10-12
10.4.7.2 Terrain Page View .............................................................. 10-13
10.4.7.3 Terrain Page TAWS-B Selections ......................................... 10-14
10.4.8 TAWS Alerts ...................................................................... 10-14
10.4.8.1 TAWS-B Alerting Colors and Symbology ............................. 10-15
10.4.8.2 Excessive Descent Rate Alert .............................................. 10-17
10.4.8.3 Forward Looking Terrain Avoidance .................................... 10-17
10.4.8.4 Premature Descent Alerting ............................................... 10-18
10.4.8.5 Inhibiting/Enabling TAWS-B PDA/FLTA Alerting ................... 10-19
10.4.8.6 Negative Climb Rate After Take-Off Alert (NCR) .................. 10-19
10.4.8.7 Altitude Voice Call Out (VCO) ............................................ 10-21
10.4.8.8 TAWS-B Not Available Alert ............................................... 10-21
10.4.8.9 TAWS-B Failure Alert.......................................................... 10-21
10.4.9 TAWS-B System Status ....................................................... 10-21
10.5 HTAWS (Optional) ............................................................................ 10-22
10.5.1 Introduction ...................................................................... 10-22
10.5.1.1 Overview ........................................................................... 10-22
10.5.1.2 Operating Criteria .............................................................. 10-22
10.5.1.3 Limitations ........................................................................ 10-23
10.5.2 HTAWS Operation.............................................................. 10-23
10.5.2.1 HTAWS Alerting ................................................................. 10-23
10.5.2.2 Power Up .......................................................................... 10-24
190-01004-03 Rev. M GTN 625/635/650 Pilot's Guide
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
xvii