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FOMS Menu 343 (Airways Links Program)

The purpose of this program is to allow the user to view all of the waypoints that are linked by airways or direct legs to a selected waypoint. This enables the user to determine which airways use the particular waypoint and what direct legs have been established.

The available modes are:

  • Video

  • Quit

Video Mode




Choose the AIRAC Cycle to use, see AIRAC Cycle for more information.

Waypoint ID

Enter the waypoint identification code for the key waypoint for which you want to view the airway links. If there is no ambiguity, the country code and type fields will be filled automatically, otherwise the cursor will be positioned in the appropriate field and you will be prompted for input. The <?> Search function can be used to assist in the selection.

Once you have selected a waypoint, the latitude/longitude coordinates will be displayed, and the table will be filled with all of the waypoints so that the selected waypoint is connected.

The information displayed is as follows:




Identification, country code, and type for each listed waypoint.

AWY Name

The name of the airway joining the selected key waypoint to the listed waypoint.


System sequence number. This information is used by the program to ensure data integrity.

  • V: Enter whether it is a Usable Pair; is the DIRECT leg connection one way, or bidirectional. Options are Yes (Y), No (N), or Blank.

    • Y is usable pair, i.e., BOS DCT ACK

    • N is not a usable pair, i.e., ACK to BOS

    • Blank indicates bidirectional.

  • T: Allowed to use in MTTA. Options are Yes, NO, SID/STAR only.  

    • For FIRs where AUTO DCT LEGs is not activated, select Y and MTTA will use this information.

    • If it is a restricted DCT leg, then it is only available on adhoc basis by ATC or is specific to a carrier, select N. MTTA will not use this information. The DCT would be forced, however, since it is in the database, there would be no warning.  

  • FL: FL codes determine the FL applied to this DCT. If blank, it will default to information listed in the FOMS 570 for off airway flights. Refer to FOMS 350. 

Note: This FOMS menu has EDIT capability but should be restricted to only FP Data. This menu is for informative purposes only; perform EDITING in FOMS 342.

Altitude Min/Max

The altitude limits associated with this particular Airway link. 

  • <NES> for Not Established

  • <UNL> for Unlimited

G/C Trk/Dis

Great Circle Initial True Track angle and distance in nautical miles from the selected key waypoint to the listed waypoint.

Awy Typ

The airway type; <R> for RNAV.

Origin/Destination E U C H

  • S (Service)

  • <D> for Advisory

  • <F> for Flight

  • E (Type)

  • <V> for VHF

  • <N> for NDB

  • <E> for Enroute

  • <R> for Nonessential

  • U (Uncharted)

  • <U> for Uncharted

  • Blank for Charted

  • C (Compulsory)

  • <C> for Compulsory

  • Blank for Non-compulsory

  • H (Holding)

  • <H> for Designated holding point

  • Blank for Not a designated holding point

  • J (Join)

  • <J> for Joining permitted

  • <L> for Leaving permitted

  • <N> for Join/Leave not permitted

The up and down arrow keys can be used to select the next waypoint in the file. If the links for a given waypoint fill more than one page, then the <Ctrl>-F and <Ctrl>-B functions can be used to select pages for viewing. Pressing <Enter> will clear the screen and permit you to select another waypoint. Entering <Q> will clear the screen and return you to a Command Line prompt.

Note: Waypoints appear in the table in the order in that they were originally added to the file. They are not sorted alphabetically in any way.

Quit Mode

Entering <Q> at the initial command line will return a prompt line which will allow you to enter the program number you wish, or by pressing <Enter>, to return to the last used menu screen.

The following descriptions represent the typical access and privileges afforded to users designated as Dispatch Managers/Supervisors. Users with dispatcher privileges will have limited access to a subset of the screens presented.


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