A
3w
1.
In heading select and altitude hold
mode with a localizer frequency selec-
ted, the aircraft is heading
270"
to-
ward the localizer. The front inbound
localizer course of
58'
is selected.
Approach mode is armed and since
aircraft heading to selected course
angle is greater than
105",
the system
has automatically selected
BC
(back
course). This mode is used to go out-
bound on the front course. The cap-
ture point is now being computed
based on deviation and deviation rate
2.
When the mmputed capture point
is reached, approach coupled mode is
automatically activated and a left turn
outbound
on
the localizer is com-
manded by the flight director and is
satisfied by the autopilot. Note that the
left right deviations of the bar give "fly
to indications just
as
on the front
course inbound. of change.
49
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