Approach (Apr) Mode - Honeywell KFC 150 Pilot's Manual

APPROACH (APR) MODE
The approach (APR) mode provides
guidance to the pilot (or autopilot) in inter-
cepting and tracking ILS (both localizer and
glideslope), and VOR and RNAV courses.
To operate in the APR mode:
1. Tune the frequency for the selected
ILS, VOR or RNAV approach.
2. Set the PNI course pointer to the final
approach course (ILS front course
even when flying a back course
approach).
3. Set the HDG SEL 'bug" on the PNI to
the desired intercept angle and acti-
vate the HDG mode.
4. Depress the "APR" button. This arms
the automatic capture function. (The
"APR" light will flash to signify the
approach mode is armed.)
5. The V-bar will command the required
bank to maintain the selected heading
until the capture point is reached.
Then the V-bar will command a turn to
intercept the course. If the autopilot is
engaged it will turn to satisfy the com-
mands. As the V-bar commands the
turn to intercept the selected course,
the heading mode will be canceled
and the APR mode will go from arm to
engage. (HDG light will go out and
APR light will go from flashing to
steady.)
6. The V-bar will continue to command
the required bank to maintain course
and the autopilot (if engaged) will sat-
isfy those commands. (Automatic
crosswind compensation will provide
precise tracking. VOR/LOC deviation
is shown on the PNI, and actual crab
angle is shown by offset of the course
arrow from the lubber line.)
7. Once localizer course capture has
occurred on an ILS, the glideslope
mode is armed. Automatic capture
occurs as the aircraft approaches the
glideslope from either above or below.
I I
When the intercept occurs, "GS is illu-
minated on the annunciator panel. The
V-bar commands the pitch necessary
to maintain the glideslope. If the
autopilot is engaged it will satisfy these
commands. If the altitude hold (ALT)
mode had been engaged prior to GS
capture, it will disengage at capture
and the "ALT light will go out.
NOTE: For system limitations refer to your
Flight Manual Supplement.
(See page 28/29 for illustration)
NOTE: GS is locked out in VOR or
RNAV APR.
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