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w8mt-34-00-0089
OAK
1
2
787 Flight Crew Operations Manual
Flight Management, Navigation -
FMC Cruise
11.42.8 Boeing Proprietary
Direct To And Intercept Course To
If the airplane passes the last active route waypoint (or offset) or the last waypoint
prior to a route discontinuity, LNAV maintains the current heading. The EICAS
message FMC INTERCEPT HDG is displayed. If LNAV is not active, activation
can be accomplished in the following three ways:
• When the airplane is within 2.5 miles of the active leg and on an intercept
heading to the active leg, pushing the LNAV switch activates LNAV. The
airplane turns to intercept the active leg. If the intercept angle is large, the
airplane may overshoot the active leg.
• When more than 2.5 miles from the active leg, pushing the LNAV switch
when the airplane is on an intercept heading to the active leg arms LNAV
and displays the intercept path on the ND map. Activation occurs as
necessary to intercept the active leg with no overshoot. The intercept
heading must intersect the active leg inbound before the active waypoint.
• Fly direct to a waypoint or intercept a course to a waypoint. Enter a
waypoint in the RTE LEGS page active waypoint line to fly direct. Use
the INTC CRS TO prompt in line 6R to create an intercept course to the
waypoint. Pushing the LNAV switch arms or activates LNAV, depending
on the distance to the active leg.
The example below depicts the airplane being off course to the right, followed by
a modification to fly direct to BTG.
787 Flight Crew Operations Manual
Flight Management, Navigation -
FMC Cruise
Boeing Proprietary 11.42.9
Direct course from airplane present position to entered waypoint.
Execute to proceed direct to active waypoint.
1 Leg Direction
- - - - - - - - - - - - - - - - - - - - - - - - - - -
E
C
8
L
1
- - - - - - - - - -
I N T C R S T O
16 5 9
. 10/FL350
1 4
o
/
N M
MOD RTE1 EGS
9 1
.81 0/FL350
AB AM PTS>
RTE COPY>
>
.81 0/FL350
8
165o
2
16 5NM
14 NM
14 6NM
1 9
1 4
ERASE
OAK
AVE
6 2
1 2 1 o
1 o
1 4 9 o
RBL
OED
3
1 2 1 o
/
N M
1 6 o 7 N M
MOD RTE1LEGS
<
. 6 3 / F L 1 9 0
w8mt-34-00-0087
BTG
BTG
1
5
2
3
4
---
- - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - -
<
IN T C C R S TO
I N T C C R S T O
8 1 0 3 5
1 4
1 5 0 9 1
. / F L 0
o
/
N M
MOD RTE1LEGS
150o
165o
ERASE
ERASE
150
<
w8mt-34-00-0086
BTG
6
6
787 Flight Crew Operations Manual
Flight Management, Navigation -
FMC Cruise
11.42.10 Boeing Proprietary
Push –
• creates place bearing distance waypoint on the Direct To leg abeam the
bypassed waypoint if the bypassed waypoint was a database airport,
navaid, NDB, or waypoint
• creates latitude/longitude waypoint on the Direct To leg abeam the
bypassed waypoint if the bypassed waypoint was a latitude/longitude
waypoint
• creates a new place bearing distance waypoint based on the original
“place” on the Direct To leg abeam the bypassed waypoint if the bypassed
waypoint was a place bearing distance waypoint
• creates a new latitude/longitude reporting point on the Direct To leg based
on the entered latitude or longitude reporting point
• line title displays ABEAM PTS and line data displays SELECTED
• altitude/speed constraints for bypassed waypoints are removed.
ABEAM PTS prompt displays whenever the active waypoint name is modified,
usually for direct–to routing.
Push –
• copies the active route into the inactive route
• erases previous inactive route
• line title displays RTE COPY and line data displays COMPLETE
• subsequent route modifications remove RTE COPY prompt.
Displays whenever the active waypoint name is modified.
Displays boxes if entered waypoint not in the active route.
Displays current route course and prompt caret if entered waypoint in the active
route.
When boxes displayed, valid entry is intercept course from 000° through 360°.
May be changed until executed. Entered or selected value displays in large font.
Push –
• when current route course (165°) displayed, selects it as intercept course
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787机组操作手册Flight Crew Operations Manual 3(63)
