ARINC 424 Format Explained

ARINC 424 is a text-based format that encodes data into a fixed-width field containing 132 characters. Each row is segmented into a primary key portion, and a record portion. Subsequent records for an entity are called continuation records, and there are both standard and extended record specifications supporting fields and their properties.

ARINC 424 uses the path-terminator concept to capture lines and areas without explicitly storing all edges or boundaries. The format leverages coded lists, along with designated points to indicate the beginning or end points of line or boundary segments, and the path type to reach the segment from a previous segment.

ARINC 424 Geometry Types

Designated Points

Extract and visualize aeronautical infrastructure features such as NDB and VHF navigation aids, enroute and terminal waypoints, airports and runways.

Procedures & Airways

Leverage the leg coding for procedures and airways to generate geographic objects for each leg segment that can be visualized in a GIS or charting product.


Airspace are the 3-dimensional volumes of regulated airspaces. Visualize these as either 2D horizontal extents, or as 3D volumes based upon the lower and upper limit values for each airspace part.


FME Desktop
FME Server

Reading: Yes
Writing: Yes

File Extension: (*.prc)
ARINC Version(s): 14, 15, 16, 18, 20

Operating Systems

Windows 32-bit & 64-bit
Linux 32-bit & 64-bit
Mac OS X
(Maverick, Yosemite, El Capitan)

Refer to FME technical specifications for specific OS version support.

Popular Outputs

AIXM 4.5 (XML)
AIXM 5.1 (XML)
Esri File Geodatabase (FGDB)
Esri Shape (SHP)
Google KML (KML/KMZ)
Microsoft Excel (XLSX)
Microstation (DGN)

Test Us

Give us a sample ARINC 424 test file. We’ll generate some sample files (KML) that you can display in any map viewer.  See how you can integrate air navigation data into your application.