4 mode knob, Mode knob -4, Figure 1-3: mode knob -4 – BendixKing KT 74 User Manual
Page 10: On 1.4

KT 74 Pilot's Guide
Operation
D201308000036
Page 1-4
Rev 0 Dec 2013
©
Honeywell International Inc. Do not copy without express permission of Honeywell
1.4
MODE KNOB
Figure 1-3: Mode Knob
The mode knob to the right of the display controls the power to the
transponder and the operating mode. The mode knob has the
selections that follow:
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.