UPDATE COMPLETE
Displayed after a position shift has been selected and executed.
Flight Management, Navigation -FMC Cruise 737 Operations Manual

Intentionally
Blank

Copyright . The Boeing Company. See title page for details.
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Flight Management, Navigation -FMC Cruise 737 Operations Manual
Navigation Data Reference Navigation Data (REF NAV DATA) Page
The REF NAV DATA page provides information about waypoints, navaids,
airports, and runways. Entering the appropriate identifier initiates the display. Entering SUPP in the scratch pad prior to selecting NAV DATA results in display of the supplemental navigation data (SUPP NAV DATA) page.
If the entered identifier is already stored in the permanent, supplemental, or temporary database, then relevant data propagates to the subsequent REF NAV DATA display.
If the entered identifier is not stored in any database, the subsequent REF NAV DATA display contains box prompts. Following entry of the required information, the new data may be stored in the temporary database by executing (except for runway data). Data may be subsequently deleted from the temporary database by deleting the individual identifier, if the identifier is not presently being displayed on another page (e.g., RTE LEGS, PROGRESS, etc.).
All data stored in the temporary database is cleared at flight completion.
Flight Management, Navigation -FMC Cruise 737 Operations Manual

Waypoint Identifier (WPT IDENT)
Displays dashes initially.
Any waypoint, navaid or runway can be entered.
Format for runway entry is “RWnna” where “nn” is a one or two digit numeric

(with or without leading zeros) and “a” is an optional character L, R, or C.
In order to access runway data, an airport must be identified.

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

Airport Identifier (AIRPORT IDENT)
Displays dashes initially.
Displays box prompts if runway is entered into 1L prior to airport entry.
An invalid airport/runway pair will result in “NOT IN DATA BASE” displayed in

the scratchpad.

Navigation Aid Identifier (NAVAID IDENT)
Displays dashes initially.
Valid entries are up to 4 alphanumeric characters.
If the navaid is not contained in the databases, box prompts will appear in related

data fields needing entry.

DME INHIBIT
Entry of a DME identifier inhibits use of DME information for FMC position
updating.
Any associated VOR can still be used for FMC position updating out to 25NM
from the station.

VOR INHIBIT
Entry of a VOR identifier inhibits use of VOR bearing information for FMC
position updating.
Any associated DME can still be used for FMC position updating.
On airplanes with scanning DME, VOR Inhibit feature is not available.

SUMMARY
Selection displays NAV SUMMARY pages.
Blank if supplemental and temporary databases are empty.

Navigation Options (NAV OPTIONS)
Selection displays NAV OPTIONS page.
Flight Management, Navigation -FMC Cruise 737 Operations Manual

Waypoint Data Display

Waypoint Identifier (WPT IDENT)
Displays or permits entry of the desired waypoint (5 characters maximum). Following entry, the associated data lines are displayed.

LATITUDE/LONGITUDE
Displays or permits entry of waypoint latitude and longitude. Entry on the REF IDENT and RADIAL/DIST lines cause latitude and longitude to be computed and displayed.

Magnetic Variation (MAG VAR)
Displays or permits entry of waypoint magnetic variation. Data is automatically computed based on latitude and longitude.
Manual entry has priority.

Reference Identifier (REF IDENT)
Together with RADIAL/DIST, displays or permits entry of reference point for a created waypoint.

INDEX
Selection displays INIT/REF INDEX page.

Radial/Distance (RADIAL/DIST)
Together with REF IDENT, displays or permits entry of bearing and distance for a created waypoint.
Copyright . The Boeing Company. See title page for details.
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Flight Management, Navigation -FMC Cruise 737 Operations Manual
Navigation Aid Data Display

Frequency (FREQ)
Displays or permits entry of the frequency of the entered navaid.

Navigation Aid Identifier (NAVAID IDENT)
Displays or permits entry of navaid identifier (5 characters maximum). Following entry, the associated data lines are displayed.

Classification (CLASS)
Displays or permits entry of the classification of the entered navaid.
　
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