BendixKing CAS 67A ACAS II - Manual (Page 51)

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 578A TRANSPONdER/TCAS CONTROL UNIT
PS 578A Single or Dual Mode S/TCAS Control Unit (Dual Unit shown).
PS 578A CONTROLS AND DISPLAYS
the PS 578a Control Unit is the master control for both the tCaS sys-
tem and transponder. the PS 578a 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 578A 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 atC code
selection, Flight ID (FID) selection, whether
transponder #1 or #2 is active, transponder
mode, transponder ident, own aircraft flight
level (in teSt), tCaS mode, tCaS range
and tCaS above, below or normal vertical
display limit selected.
45 Rev 3 4/13 CAS 67A/67B ACAS II Pilot’s Guide
Controls and Displays
006-18201-0000-r003 CaS 67a_67B aCaS Pilots Guide 2013 0410_CaS 67a 4/10/13 11:11 aM Page 45