Reference Navigation Data
The Reference Navigation Data page displays data about waypoints, navaids, airports and runways. Use this page to inhibit FMC position updates from radio navaids.
(SB changes without VOR ONLY INHIBIT line displayed on the REF NAV DATA page.)
IDENT - Valid entries are any waypoint, navaid, airport, or runway from the navigation database. Only runways at the destination airport can be entered. Entry changes to dashes when page is exited and then reselected.
LATITUDE - Displays latitude of entered identifier. When the identifier is a runway the latitude displayed is for the threshold of the runway.
FREQ - Displays frequency of entered identifier when it is a navaid. The line and title are blank if the waypoint is not a navaid.
MAG VAR - Displays magnetic variation when entered identifier is a navaid.
NAVAID INHIBIT - Enter the identifier of up to two VORs that should not be used for FMC position updates. Only the VOR portion of the navaid is inhibited, the FMC will still tune the DME for DME-DME updating. Entries are blanked at flight completion. Deleting or overwriting removes a previous inhibit.
INDEX - Displays the INIT/REF INDEX page.
LONGITUDE - Displays longitude of entered identifier. When the identifier is a runway the longitude displayed is for the threshold of the runway.
ELEVATION - Displays elevation of entered identifier when it is a navaid, airport, or runway.
LENGTH - Displays runway length when entered identifier is a runway. The line and title are blank if the waypoint is not a runway.
NAVAID INHIBIT - Enter the identifier of up to two VORs that should not be used for FMC position updates. Only the VOR portion of the navaid is inhibited, the FMC will still tune the DME for DME-DME updating. Entries are blanked at flight completion. Deleting or overwriting removes a previous inhibit.