BendixKing CAS 67A ACAS II - Manual (Page 14)

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air traffic control (atC) procedures and the see and avoid concept
continue to be the primary means of ensuring aircraft separation in
the absence of an ra. When an ra is issued, however, compliance
with the ra is required.
the new procedures are the result of the experience gained from a
decade of worldwide tCaS II operations and as a result of several
monitoring programs. the most important change is related to the
procedure when an ra is generated (from revision of PanS-oPS,
Doc 8168: operation of tCaS II equipment). the new procedure
clearly states that:
• Pilots are required to respond immediately by following the ra as
indicated, unless doing so would jeopardize the safety of the airplane
• Pilots are required to follow the ra even if there is a conflict
between the ra and an atC instruction
• Pilots must not maneuver in the opposite sense of an ra
note: Visually acquired traffic may not be the same traffic resulting
in an ra. Visual perception of an encounter may be misleading, par-
ticularly at night.
• Pilots must, as soon as permitted by flight crew workload, notify the
correct atC unit of the ra, including the direction of any deviation
from the current atC instruction or clearance.
CAS 67A/67B ACAS II Pilot’s Guide Rev 3 4/13
Introduction
006-18201-0000-r003 CaS 67a_67B aCaS Pilots Guide 2013 0410_CaS 67a 4/10/13 11:11 aM Page 8