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when the DISPLAY prompt is ON and the airplane is inside the clean circle.
Push – alternates between ON and OFF.
ON – displays the clean and drag circles on the ND. The drag circle does not
display until the airplane position is inside the clean circle.
OFF – removes the clean and drag circles from the ND.
Selected state is large green font, otherwise small white font.
Automatically changes to OFF within 150 feet of the waypoint constraint altitude.
1 Descend To (DES TO)
2 Distance To Go (DTG)
3 Speed/Altitude (SPD/ALT)
4 TO CLEAN
5 TO DRAG
6 DISPLAY
787 Flight Crew Operations Manual
Flight Management, Navigation -
FMC Descent and Approach
Boeing Proprietary 11.43.9
Engine Out Descent
There are no specific engine out pages for descent. Use the two engine descent
planning features and pages.
Approach
During approach, roll and pitch modes usually change to the approach guidance
supplied by navigation radios. The FMC continues to calculate and show present
position and can supply LNAV and VNAV approach guidance for certain types of
approaches when radio navigation is not used.
The RTE LEGS and PROGRESS pages are used to manage the airplane until other
approach guidance becomes active. Other pages which support approaches are:
• ARRIVALS page – to select arrival and approach procedures
• APPROACH REF page – to specify approach flap settings and set the
approach VREF
• HOLD page – to manage holding patterns.
Holding is described in this section but it can be used during any phase of flight.
Arrivals Page
The arrivals page allows selection of a runway, approach, approach transition,
standard terminal arrival route (STAR) or profile descent, and an arrival transition
to the destination airport.The INDEX key accesses the DEP/ARR INDEX and
provides arrival/departure data for any other airport in the navigation database.
Route 1 and route 2 have separate arrival pages.
Airports are using multiple RNAV/ILS approaches to the same runway. ICAO has
developed a naming convention which adds an additional character to the
approach name; Z, Y, X, ... in the approach title following the guidance source.
The primary approach is identified as the “Z” approach; all subsequent procedures
(normally with different missed approach paths) use the alpha characters in
reverse order beginning with Y. This change requires approach names with up to
eight characters to be encoded in the navigation database.
Selecting Options
Selecting a runway, approach, approach transition, STAR/profile descent, or
arrival transition displays <SEL> inboard of the selection and displays MOD in
the page title. The other options within the same category are removed from the
list. When the modification is executed, <SEL> changes to <ACT>. Selecting
another page and returning to ARRIVALS displays all options; the applicable
<SEL> or <ACT> prompts display.
787 Flight Crew Operations Manual
Flight Management, Navigation -
FMC Descent and Approach
11.43.10 Boeing Proprietary
When a STAR is selected followed by selection of an approach or runway and a
transition exists in the navigation database, the transition waypoints with
associated speed/altitude constraints are inserted into the flight plan linking the
STAR to the approach or runway. If more than one transition exists, selection of
the applicable transition is made under TRANS on the left side of the page. Some
STARs serve more than one runway. If a STAR and runway are selected and
subsequently a different runway is selected, and if the STAR is compatible with
the new runway, the transition waypoints are inserted into the flight plan linking
the STAR to the runway.
If a different STAR, runway, or STAR-runway combination is desired, selecting
another page and returning to the ARRIVALS displays all options.
787 Flight Crew Operations Manual
Flight Management, Navigation -
FMC Descent and Approach
Boeing Proprietary 11.43.11
Arrivals Page – IFR Approaches
The destination airport identifier displays in the title.
Airports with more than 5 runways or STARs produce multiple arrivals pages.
STARS display in a list under the STARS line title. Profile descents display below
STARS under the PROF DES line title.
NONE displays when there are no STARS in the database.
1 Page Title
2 Standard Terminal Arrivals (STARS), Profile Descents (PROF DES)
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787机组操作手册Flight Crew Operations Manual 3(81)
