INSTALLATION MANUAL
89000007
Page 1-6
15 Nov 2013
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Cables. You need to supply and fabricate all required cables. Guidance on
cable types is given in Paragraph 2.8.1 below.
Mounting. To secure the transponder tray to the airframe you will need at least
6 flat head screws and six self-locking nuts. If the aircraft does not have
existing mounting provisions you may need to fabricate additional brackets to
support the transponder tray.
To support the optional ADS-B features a GPS receiver with an appropriate serial
output is required. To support the optional TIS-A features a display with an
appropriate serial input is required.
1.12 Normal Operations Overview
On the front panel is a blue tinted white backlit LCD display adjacent to a rotary
mode selector knob (OFF, SBY, ON, and ALT) and buttons for IDENT and VFR
squawk code. A row of numeric buttons along with the enter (ENT) and function
(FUNC) buttons lie below the display. Refer to Figure 1-1.
Figure 1-1
. KT 74 Display
1.13 Display
The display shows the operating mode of the transponder, the reported pressure
altitude, and the current squawk code and Flight ID. The reply indicator is active
when the transponder replies to interrogations.
The pressure altitude is displayed as a Flight Level, which is the pressure altitude
in hundreds of feet. When non-standard atmospheric conditions apply, this may
not match the altimeter indicated altitude.
