.
discontinuity

.
beginning of approach transition

.
approach procedure

.
DME arc

.
heading leg

.
holding pattern (except PPOS)

.
certain legs containing flyover waypoints

.
course change greater than 135 degrees

.
preplanned termination waypoint.

Copyright . The Boeing Company. See title page for details.
11.42.16  December 3, 2004

Flight Management, Navigation -FMC Cruise 737 Operations Manual

OFFSET
Selection displays the lateral offset page.
Lateral Offset Page

Offset Distance (OFFSET DIST)
Enter the desired lateral offset direction (left or right) and distance. In the example, the 10.0 nm offset left of course could be entered L10.0, L10, 10.0L, or 10L.
Entry results in display of start and end waypoint fields.

START WAYPOINT
The waypoint at which the offset is to begin may be entered (up to 6 characters).

Dashes are displayed if current leg is valid for offset. Box prompts are displayed
if current leg is invalid for offset.
Offset will begin at first valid offset leg after the start waypoint.
Deletion of the start waypoint (or no entry) will result in offset beginning at first

valid offset leg in the flight plan.

END WAYPOINT
The waypoint at which the offset is to end may be entered (up to 6 characters).
Offset will propagate through the flight plan until the end waypoint is encountered. Deletion of the end waypoint (or no entry) will result in offset continuing until an
invalid offset leg is encountered.
Flight Management, Navigation -FMC Cruise 737 Operations Manual

Progress Page

Modified (MOD)
Displays MOD when the route is being modified.
CAUTION: The displayed values on the destination line now reflect the modification and may not be accurate for the active flight plan.
Copyright . The Boeing Company. See title page for details.
11.42.18  December 3, 2004

Flight Management, Navigation -FMC Cruise 737 Operations Manual
VNAV Modifications
Three primary cruise modes are available – economy cruise (ECON CRZ), long range cruise (LRC CRZ), and cruise with a manually selected speed. Access to the various cruise pages is obtained by pressing the CRZ mode select key.
Cruise Page

Cruise Altitude (CRZ ALT)
Displays present cruise altitude in flight level or feet x 100. Value may be entered via the keyboard or propagated from the PERF INIT, CLB, CRZ CLB, or CRZ DES pages.
During active cruise, entry of a new value propagates to all other pages which display cruise altitude and causes the MOD CRZ CLB or MOD CRZ DES page to appear.
Flight Management, Navigation -FMC Cruise 737 Operations Manual

Target Speed (TGT SPD)
Displays the computed or manually entered value for target airspeed or Mach.
Computed speed is limited to a maximum of 340 knots or M .82.
The value is reverse highlighted on an active CRZ page.

Turbulence N1 (TURB N1)
Displays proper N1 for turbulence penetration.
Value is for reference only. It is not commanded to the autothrottle.

Fuel at Destination (FUEL AT XXXX)
Displays the predicted fuel remaining at destination.

The value assumes continued flight per the displayed cruise and planned descent

modes along the active route.
If a step to altitude is entered on line 1R, the computation assumes that the step
will occur at the step point. After passing the step climb point, the predicted fuel
weight is based on an immediate step climb from current position.

Cruise page Prompts
Allow line selection of various CRZ pages.
(U4 and on) The RTA prompt is replaced with ERASE when a MOD page is displayed.

Optimum/Maximum Altitude (OPT/MAX)
OPT – displays the computed optimum altitude for the displayed cruise mode. The
value is not constrained by minimum cruise time criteria (as is the TRIP ALT on
the PERF INIT page).

(U5 and on) MAX – displays the maximum possible altitude based on the selected
target speed and the specified maneuver margin.
Values are advisory only. They are provided for crew reference.

STEP Altitude
This line may be used to enter a possible step climb or descent altitude for crew
evaluation.

The line will be blank when within 100 nm of top of descent or when RTA mode
is active.
For FMCs U3 and U4, “STEP TO” is displayed on the data line.

Copyright . The Boeing Company. See title page for details.
11.42.20  December 1, 2000
　
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