Mode Selector Knob; Push Buttons; Squawk Code Entry; Table 1-7. Push Button Functions - Honeywell BendixKing KT 74 Installation Manual

1.14 Mode Selector Knob

The right hand knob controls the power to the transponder and the operating
mode.
OFF Power is removed from the transponder.
SBY The transponder is on, but will not reply to any interrogations.
ON The transponder will respond to all interrogations, but altitude reporting is
suppressed.
ALT The transponder will respond to all interrogations.
When airborne, the transponder should always be set to ALT unless otherwise
directed by Air Traffic Control. Aircraft installations that include a gear squat
switch or other method of air/ground determination will automatically select
surface reporting mode on landing or when taxiing. The mode indicator will read
GND.

1.15 Push Buttons

Refer to Table 1-7 for the push buttons and their functions.
Button Function
IDENT Press the IDENT button when ATC instructs you to "Ident" or "Squawk
Ident". This activates the SPI pulse in the transponder replies for 18
seconds. IDENT will appear in the display.
VFR Pressing the VFR button sets the transponder to the pre-programmed
VFR squawk code. Pressing the button again restores the previous
squawk code.
Pressing the VFR button when in Flight ID Edit changes the Flight ID to
the pre-programmed ID set up during configuration of the transponder.
FUNC Pressing the FUNC button provides access to the flight timer, stopwatch,
Flight ID editing, ADS-B monitor (depending on installation) and altitude
monitor function.
ENT The ENT button confirms entry data or presented options.

1.16 Squawk Code Entry

Press any of the numeric buttons (0 through 7) to start modifying the squawk
code. A new squawk code is set when the fourth digit is entered. If the code entry
is not completed within 7 seconds, the changes are ignored and the previous
code restored.
© Honeywell International Inc. Do not copy without express permission of Honeywell.
INSTALLATION MANUAL
89000007

Table 1-7. Push Button Functions

Page 1-7
15 Nov 2013