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ALC Approach Minima

Note: 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.

The minimum allowable ceiling and visibility can be added for each approach.  This allows the NFP system to know whether or not an approach can be used with the current weather conditions at the airport. The MTTA attempts to try to avoid the approach if the minima are not met.  If an approach is specified and it does not meet the minima, a warning is generated.

For an overview of the WebFOMS features see the Aircraft Characteristics screen. The features described there can be applied to all screens.


For instructions on how to make modifications on the WebFOMS screens, see Modify, View Aircraft Characteristics. It uses the Aircraft Characteristics as an example but can be applied to all WebFOMS screens.


Screen is the default view when you first go to a WebFOMS screen. When Screen is selected you can view all records that exist in the system.  Select the arrow in the first field of the WebFOMS screen to access the drop-down menu to view the list of available records.

Only items that exist in the database are shown in the drop-down list.

See Approach and Minima for more information

Ceiling value – entered as FL (hundreds of feet)

Visibility value – entered in meters (same as alert criteria)

Note: The NFP system always looks for valid METARS first and if none are available for the destination (based on ETA), it looks at the TAF to determine whether the approach meets the approach minima.

Alternate Minima

Minima values for the destination alternate must be equal or greater than those entered for the airport. Values for the Suffix and Transition ID fields are optional.

If a lesser minima value is entered, you will see this:

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