Garmin GTS 820 Pilot's Manual

Also see for GTS 8000: Replacing

Contents

Garmin GTS 820 Pilot's Manual Manual pdf 15 page image

11190-00587-02 Rev. A Garmin GTS 8XX Series Traffic Advisory SystemGTS 8XX Series Sensitivity LevelThe GTS 8XX Series issues Traffic Advisories according to the current SensitivityLevel (SL). To prevent nuisance alerts near airports, the GTS 8XX Series has twosensitivity levels available, Sensitivity Level A (SLA) and Sensitivity Level B (SLB).Refer to Table 5 for Sensitivity Level definitions. SLA is used to reduce sensitivitylevels in airport environment and avoid nuisance traffic alerts.The logic for choosing the sensitivity level is based on aircraft configura-tion. SLA is determined according the following order:1. Ownship is below 2,000 feet AGL (if equipped with a radio altimeter)2. Landing gear is extended (no radio altimeter is installed on retractable gearaircraft)3. Ground speed is below 120 knots (no radio altimeter installed in a fixed-gearaircraft)The GTS 8XX Series will remain in SLB at all other times. In the event afixed-gear aircraft is not equipped with a radio altimeter and ground speed is notavailable, the GTS 8XX Series will remain in SLB at all times.Note: If the GTS 8XX Series is interfaced to a radio altimeter, or if the gear/wheel is configured as fixed, the system will ignore the GEAR DOWN ANDLOCKED discrete input.In both SLA and SLB, audio alerts are suppressed only under the followingconditions:1. If radio altimeter is installed and own altitude is less than 400 feet AGL.2. If no radio altimeter is installed in a retractable gear aircraft and gear isextended.