Audio & 11 - Garmin GTN 625 Pilot's Manual

Altitude
Foreword
(Feet*)
Getting
0 - 1,000
Started
Audio &
1,000 - 2,350
Xpdr Ctrl
2,350 - 5,000
Com/Nav
5,000 - 10,000
10,000 - 20,000
FPL
20,000 and above
Direct-To
System uses pressure altitude except when Radar Altitude is available. Radar Altitude takes
*
precedence over pressure altitude reporting.
Proc
The TCAS II system categorizes detected traffic into four groups of increasing
Wpt Info
collision threat potential:
Map
• Other Traffic (OT), displayed as a hollow white diamond, is not currently
a threat.
Traffic
• Proximate Traffic (PT), displayed as a filled white diamond, is not
currently a threat, but is within 6 nm and ±1,200 feet of the own-aircraft
Terrain
altitude.
Weather
• Traffic Advisory (TA), displayed as a filled yellow circle, indicates traffic is
within 20-48 seconds of a potential collision area. If a Traffic Map is shown,
Nearest
and the TA traffic is beyond the selected map range, the system displays a
half-TA symbol at the edge of the map at the approximate relative bearing
Services/
Music
of the TA traffic. If TA traffic subsequently meets the criteria for an RA, the
system will issue an RA.
Utilities
• Resolution Advisory (RA), displayed as a filled red square, indicates
System
traffic is within 15-35 seconds of a potential collision area. If a Traffic
Map is shown, and the RA traffic is beyond the selected map range, the
Messages
system displays a half-RA symbol at the edge of the map positioned at the
approximate relative bearing to the RA traffic.
Symbols
Appendix
Index
9-38
TA Time to CPA
Table 9-17 Altitude-based TCAS II TA/RA Alert Thresholds
GTN 625/635/650 Pilot's Guide
(Seconds)
20
25
30
40
45
48
RA Time to CPA
(Seconds)
RA not issued below
1,000 feet
15
20
25
30
35
190-01004-03 Rev. P