BendixKing CAS 67A TCAS II - Manual (Page 72)

006-08499-0000 Rev 7 Effective Date 2/04 70
Systems Considerations
Refer to the Airplane Flight Manual for the specific operational
features of the TCAS installation.
When TCAS commands a corrective Resolution Advisory, suffi-
cient time exists to perform a smooth vertical maneuver to avoid
the conflict. TCAS II expects five second crew reaction time to
RAs, requiring approximately .25 G. An increase or reversal to
an RA requires two and one half seconds reaction time and up to
.35 G.
It is possible to see an aircraft flying the same course and direc-
tion as your own aircraft, yet TCAS II may not consider it a
threat. TCAS II calculates the closure rate of the intruder, and
derives the time to the closest point of approach (CPA). If there
is no closure rate, no advisory will be issued, unless the intruder
is very close(within approximately 1/4 mile). Conversely, traffic at
the same altitude very far ahead may be shown as an RA by
TCAS because of a very rapid closure rate.
NOTES