User's Manual

SKY899 Pilot’s Guide 4-1
Preliminary
Principles of
Operation
Chapter 4
Introduction
This chapter describes, lists, and illustrates Traffic Advisory
(
TA) criteria and other factors that affect the display of traffic
symbols including
Automatic Dependent Surveillance Broadcast
(
ADS-B). Table 4-1 on the next page summarizes the criteria
necessary for the
SKY899 to display a TA.
Sensitivity Levels
The SKY899 uses one of two sensitivity levels, A or B, to
determine when to display a
TA. Having two sensitivity levels
allows the
SKY899 to reduce the number of nuisance TAs
during takeoff and landing (sensitivity level
A), and to maxi-
mize the detection of
TAs during the cruise phase of your flight
(sensitivity level
B).
Sensitivity Level A
Sensitivity level A consists of two criteria for displaying a TA:
1. The intruder aircraft enters into a cylinder of airspace
surrounding your aircraft defined by a
0.2 nmi horizon-
tal radius and a height of ±
600 ft from your aircraft. (See
figures
4-1 through 4-3.)
OR…
2. The intruder aircraft approaches your aircraft on a
course that will intercept your aircraft within 15 or 20
seconds (within 15 seconds for a non-altitude reporting
intruder aircraft; within
20 seconds for an altitude
reporting intruder aircraft).