Back Course Mode (Bc); Altitude Hold Mode (Alt) - Honeywell KFC 150 Pilot's Manual

BACK COURSE (BC) MODE
The back course (BC) mode provides
guidance to the pilot (or autopilot) in inter-
cepting and tracking a reverse course LOC.
To operate in the back course mode:
1. Tune the frequency for the selected
2.
BE CERTAIN TO SET IN THE ILS
ILS back course.
FRONT COURSE EVEN THOUGH YOU
WILL BE FLYING A RECIPROCAL
HEADING ON AN ILS BACK COURSE
APPROACH. FOR EXAMPLE, THE
BACK COURSE APPROACH MIGHT
HAVE A FRONT COURSE
OF
090
DEGREES WHICH YOU WILL SET IN
ING 270 DEGREES TO RUNWAY 27.
PNI to the desired intercept angle and
activate the HDG mode.
4. Select the back course mode by either
depressing the "APR" button and then
the " B C button or by merely depress-
ing the BC button by itself. (BC will
light and the 'APR' light will flash to
signify approach mode is armed.)
AS YOU FLY A BACK COURSE HEAD-
3. Set the heading select "bug" on the
5. The V-Bar will command the required
bank to maintain the selected heading
until the capture point in reached, then
it will command a turn to intercept the
course. The "HDG" light will go off and
the "APR" light will illuminate steadily
as the BC mode goes from arm to
engage.
If
the autopilot is engaged it
will turn to satisfy the commands.
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. (The glideslope is
locked out during a back course
approach.)
(See page 26/27 for illustration)
ALTITUDE HOLD IALT) MODE
The altitude hold (ALT) mode provides
guidance to the pilot (or autopilot) for main-
taining the altitude at which this mode was
engaged. To operate in the ALT mode:
1 Depress the "ALT" button when the air-
craft has reached the altitude you wish
to maintain. (For smoother operation,
press the "ALT" button when the verti-
cal velocity is no more than 500 fpm.)
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