User's Manual

Chapter 1 – System Description
SKY899 Pilot’s Guide
1-6
Preliminary
Features
ing aircraft. The SKY899 then predicts collision threats and
plots the eight most threatening aircraft locations on the
display.
Figure
1-5 shows the SKY899 vertical display modes (look up,
look down, normal, and unrestricted). The figure also shows
the traffic zones around your aircraft and the traffic symbols
that appear on the display when intruding aircraft enter one of
those zones.
A solid circle is the visual part of the
Traffic Advisory (TA) that
the
SKY899 generates when it predicts that an intruder aircraft
may pose a collision threat. The aural part of the
TA, “traffic,
traffic,” is annunciated over a cockpit speaker or headset. An
open diamond represents
Other Traffic (OT) that does not pose
an immediate collision threat. A solid diamond (
Proximity
Advisory, PA) only appears on TCAS installations.
The
SKY899 uses either Sensitivity Level A (SLA) or Sensitivity
Level B (SLB) to determine when to display a TA. In general,
SLB is used during the in-flight phase and SLA is used during
takeoff and landing. Sensitivity levels and other factors affect-
ing the display of traffic symbols are discussed in detail in
chapter
4.
Features
• Tracks up to 35 intruder aircraft (displays the 8 most threat-
ening)
• Tracks intruder aircraft approaching at closure rates up to
1200 knots
• Installs as a
TAS or as a TCAS I
• Costs only a fraction of the price of a traditional TCAS I or II
• Requires no mode S transponder
• Displays traffic information in three horizontal display
ranges:
15, 6, and 2 nmi
• Displays traffic information in four vertical display modes:
normal (
±2,700 ft), look up (+9,000 ft to –2,700 ft), look down
(
+2,700 ft to –9,000 ft), and unrestricted (±9,900 ft)
• Generates visual and aural advisories of aircraft that may pose
a collision threat