BendixKing KLN 94 - Pilots Guide - Manual (Page 23)

1. KLN 94 SYSTEM COMPONENTS
A basic KLN 94 system consists of a panel mounted KLN 94 GPS and a
KA 92 GPS antenna. An altitude input is required to obtain full navigation
and operational capabilities. Additional system components may be added
or interfaced to the KLN 94 which increase its features and capabilities.
Some of these optional components include an external course deviation
indicator (CDI) or horizontal situation indicator (HSI), autopilot, and exter-
nal annunciators. Typically, an altitude input and an external indicator are
required for IFR approach certification.
The KLN 94 panel mounted unit contains the GPS sensor, the navigation
computer, a color LCD Display, and all controls required to operate the
unit. It also includes the database card which slides into the left side of the
front panel.
The KA 92 GPS “patch” antenna is available for use with the KLN 94. It is
designed to always be mounted on the top of the aircraft.
The KLN 94 has analog outputs to drive the left-right deviation bar of most
mechanical CDI’s and HSI’s. In addition, the NAV mode of the
Bendix/King KAP 140, KFC 150, KAP 150, KAP 150H, KAP 100, KFC
200, KAP 200, KFC 225, KFC 250, KFC 275, KFC 300, and KFC 325
flight control systems may be coupled to the KLN 94. ORS 03 and higher
KLN 94 units have a DC roll steering output capable of interfacing with all
KFC 225 and some versions of KAP 140 flight control systems. Many
other autopilots may also be coupled to the KLN 94. Actual autopilot per-
formance and capability when coupled to the KLN 94 may vary
significantly from one autopilot model to another.
Altitude may be provided to the KLN 94 from an encoding altimeter or
blind encoder. Altitude is used as an aid in position determination when
not enough satellites are in view.
Depending on where the KLN 94 is mounted in the instrument panel,
some IFR installations may require remote annunciators to be mounted in
the aircraft panel in order to indicate the status of certain KLN 94 func-
tions. En route and terminal IFR certifications require annunciators for
message (MSG) and waypoint alert (WPT). Non-precision approach certi-
fications may also require an annunciator to display when the approach
mode is armed or active.
KLN 94 Pilot’s Guide Chapter 1 System Components
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