Garmin Flight Deck 100 用户手册
190-00728-04 Rev. A
Embraer Prodigy
®
Flight Deck 100 Pilot’s Guide
419
HAZARD AVOIDANCE
6.6 TCAS I TRAFFIC
WARNING:
The GTS 850 Traffic Alert and Collision Avoidance System (TCAS I) is intended for advisory use
only to aid the pilot in visually acquiring traffic. No avoidance maneuvers should be based solely upon TCAS
I traffic information. It is the responsibility of the pilot in command to see and maneuver to avoid traffic.
Aircraft without operating transponders out outside of the surveillance range are invisible to the GTS 850.
I traffic information. It is the responsibility of the pilot in command to see and maneuver to avoid traffic.
Aircraft without operating transponders out outside of the surveillance range are invisible to the GTS 850.
NOTE:
TIS is disabled when TCAS I is installed.
The optional Garmin GTS 850 is a TSO-certified Traffic Alert and Collision Avoidance System (TCAS I). The
GTS 850 enhances flight crew situational awareness by displaying traffic information for transponder-equipped
aircraft. The GTS 850 also provides visual and aural traffic alerts including voice announcements to assist in
visually acquiring traffic.
aircraft. The GTS 850 also provides visual and aural traffic alerts including voice announcements to assist in
visually acquiring traffic.
The GTS 850 is capable of tracking up to 45 intruding aircraft equipped with Mode A or C transponders,
and up to 30 intruders equipped with Mode S transponders. A maximum of 30 aircraft with the highest threat
potential can be displayed simultaneously. No TCAS I surveillance is provided for aircraft without operating
transponders.
potential can be displayed simultaneously. No TCAS I surveillance is provided for aircraft without operating
transponders.
THEORY OF OPERATION
When the GTS 850 is in Operating Mode, the unit interrogates the transponders of intruding aircraft while
monitoring transponder replies. The GTS 850 uses this information to determine the distance, relative bearing,
and if reported, the altitude vertical trend, and other information for each aircraft within its surveillance range. The
GTS 850 then calculates a closure rate to each intruder based on the projected Closest Point of Approach (CPA).
If the closure rate meets the threat criteria for a Traffic Advisory (TA), visual and aural alerting is provided.
and if reported, the altitude vertical trend, and other information for each aircraft within its surveillance range. The
GTS 850 then calculates a closure rate to each intruder based on the projected Closest Point of Approach (CPA).
If the closure rate meets the threat criteria for a Traffic Advisory (TA), visual and aural alerting is provided.
TCAS I SURVEILLANCE VOLUME
The GTS 850 surveillance system monitors the airspace within ±10,000 feet of own altitude. Under ideal
conditions, the unit scans transponder traffic up to 40 nm in the forward direction. Range is somewhat
reduced to the sides and aft of own aircraft due to the directional interrogation signal patterns. In areas of
greater transponder traffic density or when TCAS II systems are detected, the GTS 850 automatically reduces
its interrogation transmitter power (and therefore range) in order to limit potential interference from other
signals.
reduced to the sides and aft of own aircraft due to the directional interrogation signal patterns. In areas of
greater transponder traffic density or when TCAS II systems are detected, the GTS 850 automatically reduces
its interrogation transmitter power (and therefore range) in order to limit potential interference from other
signals.