737 Flight Crew Operations Manual
Valid entries can also include procedures or DIRECT. Procedures are normally entered through selections on DEPARTURES and ARRIVALS pages. DIRECT is normally entered as a result of entering a TO waypoint first.
Valid airways must:
.
contain the fix entered in the TO waypoint, and

.
contain the previous TO waypoint, or Dashed prompts change to DIRECT if the TO waypoint is entered first. Dash prompts appear for the first VIA beyond the end of the route. Invalid VIA entries display the scratchpad entry INVALID ENTRY. Invalid VIA entries are:

.  
airways and company routes which do not contain the TO waypoint of the
previous line

.
airways or company routes that are not in the navigation database. When entering airways, the beginning and ending waypoints determine if the entry is valid. The route segment must contain the waypoint entered in the TO position. The TO waypoint of the previous route segment must be the same as the

beginning point of the current route segment, or a route discontinuity is created between the segments. Entry of a SID or transition automatically enters the VIA and TO data for the route
segments of the SID. A SID automatically links to the next route segment when the final SID waypoint is part of the route segment.
LACRE3.VAMPS is an example of a SID selection made on the DEPARTURES page.
V2 is an example of airway entry.

TO
Enter the end point of the route segment specified by the VIA entry.

Entry of a waypoint in the TO column without first entering a VIA airway displays
DIRECT in the VIA column.
Box prompts indicate that an entry is required.
Valid waypoint entries for a DIRECT route segment are any valid waypoint, fix,

navaid, airport, or runway.
Valid waypoint entries for airways are waypoints or fixes on the airway.
Dash prompts appear on the first TO waypoint following the end of the route.

Copyright . The Boeing Company. See title page for details.
11.40.18   September 27, 2004

Flight Management, Navigation -FMC Preflight 737 Flight Crew Operations Manual

ACTIVATE
Pushing the ACTIVATE key arms the route for execution as the active route.
When the EXEC key is pushed, the route becomes the active route and the
ACTIVATE prompt is replaced with the next required preflight page prompt.

Push – prepares the selected route for execution as the active route.
Activation of a route is required for completion of the preflight.
Displayed on inactive route pages.
After route activation, the ACTIVATE prompt is replaced by:

.
PERF INIT, when the required performance data is incomplete, or

.
TAKEOFF when the required performance data is complete.

Route Pages 1/X and 2/X with Data Entries YA613 - YA687, YA801 - YK104
YA686, YA687, YC153, YC154, YK101 - YK104

Copyright . The Boeing Company. See title page for details.
Flight Management, Navigation -FMC Preflight 737 Flight Crew Operations Manual

YA613, YA626, YA801 - YA809, YC411 - YD655

VIA
The VIA column displays the route segment to the waypoint or termination
displayed in the TO column. Enter the path which describes the route segment
between the previous waypoint and the segment termination.

Enter an airway in the VIA column and box prompts are displayed in the TO

column if the previous TO line contains a waypoint on the airway.
Valid entries can also include procedures or DIRECT. Procedures are normally
entered through selections on DEPARTURES and ARRIVALS pages. DIRECT is
normally entered as a result of entering a TO waypoint first.

Valid airways must:

.
contain the fix entered in the TO waypoint, and

.
contain the previous TO waypoint, or Dashed prompts change to DIRECT if the TO waypoint is entered first.

Copyright . The Boeing Company. See title page for details.
11.40.20  June 1, 2005

Flight Management, Navigation -FMC Preflight 737 Flight Crew Operations Manual
Dash prompts appear for the first VIA beyond the end of the route. Invalid VIA entries display the scratchpad entry INVALID ENTRY. Invalid VIA entries are:
.  
airways and company routes which do not contain the TO waypoint of the
previous line

.
airways or company routes that are not in the navigation database. When entering airways, the beginning and ending waypoints determine if the entry is valid. The route segment must contain the waypoint entered in the TO position. The TO waypoint of the previous route segment must be the same as the