BendixKing CAS 67A ACAS II - Manual (Page 13)

7 Rev 3 4/13 CAS 67A/67B ACAS II Pilot’s Guide
INTROdUCTION
this guide applies to systems which are compliant to rtCa Do-
185B MoPS Change 7.1 and rtCa Do-185a MoPS Change 7.0.
reference to Do-185a MoPS Change 7.0 has been moved to
appendix B of this pilot’s guide. these systems are referred to as
tCaS II (traffic alert and Collision avoidance System II) in the
United States and aCaS II (airborne Collision avoidance System II)
internationally. the terminology is used interchangeably and for the
purpose of discussion, tCaS II is the terminology used in this manu-
al.
tCaS II is a system used for detecting and tracking aircraft in the
vicinity of your own aircraft. By interrogating their transponders it
analyzes the replies to determine range, bearing, and if reporting alti-
tude, the relative altitude of the intruder. Should the tCaS II proces-
sor determine that a possible collision hazard exists, it issues visual
and audio advisories to the crew for appropriate vertical avoidance
maneuvers.
tCaS II is unable to detect any intruding aircraft without an operating
atCrBS transponder (operating in Mode a and C) or a Mode S
transponder.
there are two types of cockpit displays for tCaS II, the resolution
advisory (ra) display and the traffic advisory (ta) display. the ra
display is incorporated into the vertical speed indicator (VSI). By illu-
minating red and green arcs around the dial it displays the required
rate, or limitation of climb or descent, to avoid a possible collision.
the ta display shows the intruding aircraft’s relative position and alti-
tude with a trend arrow to indicate if it is climbing or descending at
greater than 500 feet per minute. this ta display may be provided on
the weather radar indicator, on a dedicated tCaS II display or a
ta/VSI display.
the ta display identifies the relative threat of each intruder by using
various symbols and colors. Complementing the displays, tCaS II
provides appropriate synthesized voice announcements. a complete
list of symbols and announcements is given in the operation section
of this operator’s Manual.
Introduction
006-18201-0000-r003 CaS 67a_67B aCaS Pilots Guide 2013 0410_CaS 67a 4/10/13 11:11 aM Page 7