The MSA Element tool creates a Minimum Safe Altitude (MSA) element in the chart layout view. The MSA indicates the minimum safe altitude that provides a 1,000-foot obstacle clearance at a specific distance from the Navaid, airport, waypoint, or other significant point, at the center of the MSA element.
![Example of MSA element Example of MSA element](GUID-0F330D35-9270-4993-861E-5AC7792084AE-web.png)
The MSA Element tool draws the MSA values directly from the production database, allowing the generation of a customizable element. The individual components of the MSA element (inbound bearings, navaid, and associated text) are stored in the MSA and MSAGROUP feature classes in the production database.
- Start ArcMap.
- Ensure that the correct product library and production database are set.
- Ensure that your chart's data frame is set to the appropriate
instance by right-clicking the data frame, selecting Properties,
and clicking the Product Library tab.
- Klicken Sie auf OK.
- Ensure that there is a definition query that identifies the
procedure on which the MSA is needed on the TERMINALPROCEDURE table.
- Add the TERMINALPROCEDURE table to the Table Of Contents window if it is not already present.
- If there is not already a record in the TERMINALPROCEDURE table for
the procedure, create a new record.
The definition query should resemble the following query (with only the GFID differing from the example):
GFID = '{24B739EE-A16E-49BA-A309-FC5AE6B939C1}'
- On the main menu, click View > Layout View.
- On the main menu, click Customize > Toolbars > Aviation Terminal Procedure.
- Click the MSA Element button
.
An MSA element is created.
- Select the MSA and move it to the appropriate location on the chart.