BendixKing CAS 66A - Manual (Page 13)

TCAS TRAFFIC DISPLAY SYMBOLS
TCAS I will display three different traffic symbols on the traffic display.
The type of symbol selected by TCAS is based on the Intruder’s loca-
tion and closing rate. Relative bearing and distance to the Intruder are
shown by the position of the Intruder symbol in relation to the own-air-
craft symbol.
The symbols change shape and color as separation decreases
between your aircraft and Intruders to represent increasing levels of
urgency.
The traffic symbols may also have an associated altitude tag that
shows relative altitude in hundreds of feet, indicating whether the
Intruder is climbing, flying level or descending. A + sign and number
above the symbol means the Intruder is above your altitude. A - sign
and number beneath indicates the Intruder is below your altitude. A
trend arrow appears when the Intruder’s vertical rate is 500 feet per
minute or greater.
No altitude number or trend arrow will appear beside any Intruder that
is Non-Altitude Reporting (NAR).
If TCAS direction finding techniques fail to locate the azimuth of anoth-
er aircraft, a NO BEARING message appears on the screen when the
Intruder becomes a threat.
NON-THREAT TRAFFIC
An open white diamond indicates that an Intruder’s
relative altitude is greater than ±1200 feet, or its dis-
tance is beyond 5 nm range. It is not yet considered
a threat.
This traffic is 1700 feet above your own altitude,
descending at 500 feet per minute or greater.
Theory of Operation and Symbology CAS 66A Pilot's Guide
Effective Date 5/93 006-08746-0000 Rev 0 9
+17
RNG 5
+17
+1700 Ft. and
Descending
TCAS I Pilots Guide 2/8/06 3:52 PM Page 9