BendixKing CAS 67A ACAS II - Manual (Page 58)

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TA/RA (traffic advisory and resolution advisory) mode. activates
the Mode S transponder, altitude reporting, and tCaS “ta/ra”
mode. aural and visual ras (resolution advisories) will be issued for
traffic determined to be a threat. traffic will be presented on the traffic
(ta) display. ta/ra mode is annunciated in the display window, on
the optional color radar indicator or dedicated traffic display.
PS 550 TRANSPONdER/ TCAS CONTROL UNIT
PS 550 Single or Dual Mode S/TCAS Control Unit (Dual Unit shown).
PS 550 CONTROLS AND DISPLAYS
the PS 550 Control Unit is the master control for both the tCaS sys-
tem and transponder. the PS 550 will also display the selected 4096
atC code and current mode of operation in the display window.
Versions are available to control one or two transponders. a “Fail”
annunciation indicates failure of the selected transponder, antenna or
control data.
Note: If the PS 550 is interfaced to a MST 67A Mode S transponder
and the MST 67A senses a failure, a failure annunciation will be shown.
A maintenance check should be performed.
the display Window displays the atC
code selection, whether transponder #1 or
#2 is active, transponder mode, transpon-
der ident, own aircraft flight level (in
teSt), tCaS mode, tCaS range and
tCaS above, below or normal vertical dis-
play limit selected.
CAS 67A/67B ACAS II Pilot’s Guide Rev 3 4/13
Controls and Displays
006-18201-0000-r003 CaS 67a_67B aCaS Pilots Guide 2013 0410_CaS 67a 4/10/13 11:11 aM Page 52