Beechcraft C-12C Operator And Technical Reference Manual page 206

TM 1-1510-218-10
distance past the FAF to complete the
procedure turn and still be 2 nm away
from reaching the FAF. After completing
the heading portion of the procedure turn,
change the selected course to the inbound
course on the HSI.
1.1
NM
BQM
-i
ARM-068
107
KT
.01NM
068 o
OBS
071 o
2
TK
Figure 3-69. Activate the FAF
6. Once established on the inbound course,
the LEG mode will again need to be
selected
operation and waypoint sequencing will
occur.
It is mandatory that the unit be in the LEG
mode with the FAF as the active waypoint
before crossing the FAF to activate the
approach active mode and change to ±
0.3 nm scale factor. The CDI scale factor
changes from ± 1.0 nm to ± 0.3 nm over the
2 miles to the FAF. Delaying the switch
from OBS to LEG mode compresses the
scale factor change.
transition more abrupt. If the switch from
OBS to LEG is delayed too long, it will not
be possible for the KLN 90B to change to
the approach active mode.
7. When the aircraft is 2 nm from the FAF,
the KLN 90B will verify the proper GPS
integrity is available. If integrity monitoring
is available for the approach, the KLN 90B
will change to the approach active mode.
This will be annunciated on the external
approach status annunciator as well as on
the KLN 90B. The CDI scale factor will
also start to change from ± 1.0 nm to ±
0.3 nm.
8. Normal waypoint alerting will occur as the
aircraft passes the final approach fix. The
leg from the final approach fix to the
missed approach point will become active
3-52
FF24
FF24
BQM
so that proper approach
NOTE
This will make the
and the CDI scale factor will remain at
± 0.3 nm.
selected on the Super NAV 5 page, the
scale factor will zoom in on the airport as
the aircraft gets closer and closer to the
missed approach point.
map scale changes to 1 nm and the
runway diagram becomes visible on the
map.
9. The missed approach instructions may call
for a climbing turn to a heading to
intercept a course to the missed approach
holding point.
90B, it will be necessary to put the KLN
90B into the OBS mode. Make the missed
approach
-f
waypoint. Change the selected course on
the external HSI to the published course
to the missed approach holding point. Fly
the heading until intercepting the course,
then turn and track the course.
The KLN 90B must be in the OBS mode for
holding.
10. Once the aircraft reaches the missed
approach
appropriate holding pattern entry. Set the
selected course on the HSI to the inbound
holding course.
av. DME Arc Approach. DME arc procedures
with the KLN 90B are different from traditional VOR
and DME equipment. The KLN 90B provides left/right
guidance around the arc.
(1) ATC assigns the approach. Turn to the
APT 8 page for the destination to select the approach.
When the approach is selected, the KLN 90B presents
the IAF selection page.
(2) Two of the lAF's may be in the form
DxxxY. These two waypoints are the database
identifiers for the ends of the arc. D040L means DME
arc point, 040 is the radial on which the waypoint lies,
and L indicates the distance of the arc. L is the twelfth
letter of the alphabet, so L indicates that this is the
12 NM DME arc.
If the auto scale factor was
Eventually the
To fly this with the KLN
holding point the
NOTE
holding point, perform
active
the