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Preliminary - Subject To Change Without Notice
BENDIX/KING
2.3.5
KT 73 INSTALLATION
The mounting tray for the transponder should be mounted using the dimensions specified in the
outline and mounting drawing, Figure 2-4. The mounting tray should be wired according to the
system interconnect diagram, Figure 2-5 through 2-10.
2.3.5.1
Retrofit into existing KT 70, KT 71, and KT 76C Installations
If the KT 73 is replacing an existing KT 70, KT 71, or KT 76C without adding new functionality such
as TIS, ADLP, or ADS-B, the KT 73 may simply be installed in the existing rack, provided that the
installation is in a fixed wing aircraft. If the installation is in a rotary wing aircraft, the existing rack
will have to be replaced with a new rack. If the new rack in installed, it is suggested that a new
configuration module be used even if the existing installation did not have one. The KT 73 must
be programmed per section 3.2.
2.3.5.2
New Transponder Tray Installations
(1)
Rear connector wiring must be completed before permanently fastening the mount-
ing tray to the panel.
(2)
Remove the panel area specified on the outline and mounting drawing (see Figure
2-4) for front and rear dimensions. Care must be taken to avoid damage to the ad-
jacent equipment and cables.
(3)
Secure the tray to the panel. The mounting tray must be secured in the rear by at-
taching the tray to a structural member of the airframe.
(4)
Look at the bottom of the unit and confirm the front lobe of the hold-down device is
in a vertical position. This can be accomplished by using a 3-32 inch Allen wrench
through the front plate.
2.3.5.3
Transponder
(1)
Slide the transponder into the tray until the front lobe touches the mounting tray.
(2)
Turn the Allen wrench clockwise until the rear lobe engages the mounting tray slot.
Continue turning the wrench clockwise until tight.
(3)
For removal, turn the 3-32 inch Allen wrench counter-clockwise until the unit disen-
gages from the mounting tray slot. The unit can now be pulled completely out.
DO NOT OVERTIGHTEN THE LOCKING FASTENER
2.3.5.4
Aircraft Address Programming Options
The Mode S aircraft address and maximum airspeed data must be programmed for use by the KT
73. In installations having an external EEPROM module (also referred to as a Configuration Mod-
ule), this information is contained in that module as well as in the memory internal to the KT 73.
In these cases, the data in the external Configuration Module will automatically be copied into the
internal memory of any KT 73 plugged into the rack. This assumes that the external module has
been previously programmed by a KT 73 as described elsewhere in this manual.
Data that has been programmed into an external Configuration Module as part of a KT 70 instal-
lation will be automatically replaced by data contained in the internal memory of the KT 73. All
new installations will have a Configuration Module as these installations use a new rack (P/N 200-
10069-0000) which includes the Configuration Module.
Rev 0, October/2002
CAUTION:
10563I00.JA
KT 73
Page 2-8
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