Going Direct-To A Waypoint While In The Obs Mode; Activating A Waypoint While In The Obs Mode; Changing The Cdi Scale Factor - Honeywell KLN 900s Pilot's Manual

5.9.6 Going Direct-To A Waypoint While in the OBS
Mode
The direct-to function will select the OBS value that will
take the aircraft from the present position direct to the
active waypoint when the KLN 900 is interfaced to EFIS,
a compatible mechanical HSI interfaced through a KA
90, or when the KLN 900 is not the displayed navigation
source on the external indicator.
If the KLN 900 is the displayed navigation source on a
non-driven HSI or a CDI it is not possible for the KLN
900 to change the OBS value. In these situations the
KLN 900 will provide a scratch-pad message that will tell
you what OBS value should be selected to go direct to
the active waypoint (figure 5-116).

5.9.7 Activating A Waypoint While In The OBS Mode

While in the OBS mode, you may activate another way-
point by using the normal Direct To method or by using
a second method. This second method activates
another waypoint without changing the selected course
(OBS). In other words, when the new waypoint is acti-
vated, the D-Bar is not recentered. In figure 5-117 the
KLN 900 is in the OBS mode and the selected course is
90°. You have just crossed INITT intersection and
desire to activate the next waypoint in the flight plan,
FINAL, without recentering the D-Bar.
1. Press D (figure 5-118). The rules described in
section 3.8, "DIRECT TO OPERATION", dictate
which waypoint identifier will be initially displayed on
the Direct To page.
2. Press D a second time. The annunciation
DIRECT TO changes to ACTIVATE (figure 5-119).
The right side still displays the appropriate waypoint
page. Repeated presses of D alternates between
DIRECT TO and ACTIVATE. Make sure ACTIVATE
is displayed.
3. Press E to approve the waypoint page and acti-
vate the waypoint (figure 5-120). The selected
course does not change, therefore this method does
not center the D-Bar like a Direct To operation.

5.9.8 Changing the CDI Scale Factor

The Course Deviation Indicator (CDI) scale factor can
be changed by using the MODE page. In normal opera-
tions it is possible to select a CDI scale factor which is
plus or minus 5 NM, 1 NM or 0.3 NM full scale deflec-
tion. This means that if the scale factor was ±1 NM and
the needle was deflected full scale to the right, the air-
craft would be 1 NM left of course. The default CDI
scale factor is ±5 NM.
$= CRS 234
3:GGT
4:BEGIN
= 5:INITT
6:FINAL
7:MMAPP
8:KHOM
CRSR enr:090
DIRECT TO: | FINAL
FINAL
CRSR enr:090 ent INT
ACTIVATE:
FINAL
CRSR enr:090 ent INT
3:GGT
4:BEGIN
5:INITT
= 6:FINAL
7:MMAPP
8:KHOM
FPL 0 enr:090
5-39
| =GGT
|+++++i+·+++
|DIS 20.0nm
|GS 154kt
|ETE :08
|BRG 234^
NAV 1
Figure 5-116
| =INITT
|+++·+j+++++
|DIS 0.4nm
|GS 122kt
|ETE :00
|BRG 275^
NAV 1
Figure 5-117
|REF: BTV
|RAD: 292.8^
|DIS: 11.7nm
|N 44^25.40'
|W 73^27.20'
Figure 5-118
| FINAL
|REF: BTV
|RAD: 292.8^
|DIS: 11.7nm
|N 44^25.40'
|W 73^27.20'
Figure 5-119
| =FINAL
|+++·+i+++++
|DIS 4.8nm
|GS 122kt
|ETE :02
|BRG 088^
NAV 1
Figure 5-120
Rev 2