BendixKing CAS 67A ACAS II - Manual (Page 53)

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PS 578A FUNCTION SELECTOR, ATC CODE SELECT & MOMEN-
TARY TCAS DISPLAY FLIGHT LEVEL SELECT
the outer concentric knob on the right selects the Mode
S and tCaS mode of operation.
rotating the function knob (CCW) to the tSt position
initiates a comprehensive self test lasting approximately eight seconds.
all segments of the display are illuminated for 2 seconds, then the code
window will display the encoded altitude for four seconds, then the con-
trol unit will return to the previously selected mode. (refer to the test
section in the appendix for a detailed description of test functions.)
SBY places the Mode S transponder and tCaS in standby. SBy is
annunciated on the display window. Use SBy during ground operations.
ON activates the selected transponder without altitude reporting. tCaS
is in standby. on is annunciated in the display window.
ALT activates Mode S transponder with altitude reporting, tCaS sys-
tem in standby.
Selecting VFR for more than 3 seconds changes the atC code to the
pre-programmed VFr code (typically 1200). VFr is annunciated in the
display window for the 3 seconds prior to switching the programmed
code the control unit will return to the mode selected prior to making
the VFr selection.
the VFr code can be programmed to be any code by the following
technique:
a. Place the function selector to VFr.
b. Select the VFr code as required.
c. Push the Ident (IDt) button, or wait 3 seconds, or rotate the Function
switch to the desired mode.
the TA (traffic advisory) mode. activates the Mode S transponder, alti-
tude reporting and tCaS “ta onLy” mode. traffic will be presented on
the traffic (ta) display but no ras (resolution advisories) will be issued.
“ta” mode is annunciated in the control unit display window and “ta
onLy” will be annunciated on the tCaS traffic display(s).
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 47