787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Flight Management, Navigation -
FMC Descent and Approach
Copyright © The Boeing Company. See title page for details.
11.43.8 D615Z003-TBC
Offpath Descent Page
The offpath descent page allows the analysis of descent performance off the
present route of flight, direct to a selected waypoint. Data entered on the page
shows clean and drag descent ranges on the page and on the ND. The ranges are
based on an entered waypoint and altitude constraint. The range can be used to
determine if the altitude constraint can be met in a direct descent to the waypoint.
The FMC puts the last descent waypoint with an altitude constraint into DES TO.
The ECON SPD, SPD TRANS, SPD RESTR, and DES data are the same as the
DES page.
The waypoint for a direct–to descent. Usually, this is the E/D waypoint from the
active route. Manual entry of waypoints on or off of the route are allowed. The
DTG calculations are for a descent direct to the selected waypoint.
When within 150 feet of the DES TO altitude for a waypoint other than the E/D
waypoint, the display automatically changes the DES TO waypoint to the E/D
waypoint from the DES page.
A waypoint is entered for direct–to analysis.
1
Descend To (DES TO)
/33ACT ECON DES
---------- --- -------------------------
>SED
HTAPFFO<
<
>IDSEDR
SEDHTAPFFO
GTD
051
OTSED
DPSNOCE
SNARTDPS
RTSERDPS
YALPSID
OFF
MN
GARDOT
MN
NAELCOT
TLA/DPS
ON
98
31-
0082/071
-----/---
00001/042
072/508.
---------- --- -------------------------
SED
6
2
1 3
4
5
YLLEP
June 16, 2008
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