9 modes of operation, 1 selecting the leg mode or the obs mode – BendixKing KLN 900 - Pilots Guide User Manual

Page 141

5-34

Rev 2

5.9 MODES OF OPERATION

The KLN 900 allows you to choose how the course to
the active waypoint is defined. This is done by selecting
between the two course modes, LEG and OBS. The
LEG mode means that the course to the active waypoint
is selected by the KLN 900, and is the default mode
when the KLN 900 starts up. The other course mode,
OBS, is the mode that allows you to define the course to
the active waypoint. This is the mode that you will use
quite often if you conduct any non-precision approaches
using the KLN 900.

The KLN 900’s Approach Arm and Approach Active
modes are explained in chapter 6, and the KLN 900’s
Oceanic (OCN) mode is explained in chapter 9.

The status of the course modes and the approach
modes are annunciated in the lower center segment of
the screen (figure 5-109). The exceptions to this are on
the Turn-On page where the mode is not annunciated,
and on the Super NAV 5 page where the mode is
annunciated on the left side of the screen (figure 5-110).
The following abbreviations are used for mode annunci-
ation.

Enroute-Leg

ENR-LEG

Normal en route &

Enroute-OBS

ENR:274

terminal operations

Approach Arm-Leg

ARM-LEG

Approach

Approach Arm-OBS

ARM:259

operations

Approach Active-Leg

APR-LEG

Oceanic-Leg

OCN-LEG

Oceanic

Oceanic-OBS

OCN:268

operations

NOTE: The approach active-OBS mode is not a valid
mode and cannot be selected.

NOTE: ORS 04 and later versions of the KLN 900
include the Oceanic mode and the OCEANIC: ON/OFF
switch on the KLN 900’s MODE page (figure 5-111B).

For the OBS modes, the number included in the annun-
ciation is the selected magnetic course. The course
may be changed by several different methods which are
described below.

5.9.1 Selecting The Leg Mode Or The OBS Mode
You will use one of two methods to change between
course modes depending on how the KLN 900 is
installed in your aircraft. The “OBS” button on the front
of the KLN 900 may always be used to change between
Leg and OBS modes by simply pressing the button.

The current mode is displayed on the MODE page (fig-
ure 5-111).

Figure 5-111A

Figure 5-110

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CEW

SJI

MAI

Figure 5-109

Mode

Annun-

Used

ciation

For

Figure 5-111B