Manual Magnetic Variation Selection - Honeywell BENDIX/KING KLN 94 Pilot's Manual

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KLN 94 Pilot's Guide

5.16. MANUAL MAGNETIC VARIATION SELECTION

The KLN 94's primary coverage area is from N 74° to S 60° as was shown
in figure 3-1. Magnetic variation is automatically computed within this cov-
erage area when Mag Var is in the default AUTO mode on the SET 2
page. Navigation outside this area is automatically referenced to true
North unless a manual input of magnetic variation is made on the SET 2
page. The following message will be displayed on the Message page:
*Magnetic Var Invalid
Nav Data Referenced
To True North
A user-defined magnetic variation may be entered on the SET 2 page.
When a user-entered magnetic variation of 0 degrees is being used, the
following message will be displayed on the Message page:
*Nav Data Referenced
To True North
When a user-defined magnetic variation other than 0 degrees is being
used, the following message will be displayed:
*Nav Data Referenced To
User-Defined Mag Var
There are two exceptions when a user-defined magnetic variation will not
be used for navigation. When the active waypoint is part of an approach
procedure, the magnetic variation for the published approach will be used
and the following message will be displayed:
*Mag Var for Published
Approach Being Used
Also, when the unit is in the OBS mode and the active waypoint is a VOR,
the magnetic variation associated with the VOR station will be used and
the following message will be displayed:
*Mag Var for Published
VOR Being Used
NOTE: A user-entered magnetic variation will not be retained if power is
off for more than 5 minutes. Use of automatically computed magnetic vari-
ation will be restored if power is off for more than 5 minutes and the unit is
within the primary coverage area.
Chapter 5 Intermediate Operation
5-41

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