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APA

Decoding and analyzing datalink protocols.

The air traffic industry’s datalink protocol analyzer.

APA is a protocol decoder that is used to analyze digital communications traffic. It displays all VHF-based data communications exchanged between ground stations and aircraft, and allows users to visualize all layers of each protocol data unit (PDU).

APA is commonly used in conjunction with ALTYS’s test products in support to troubleshooting and performance assessment. APA also is an essential part of the COSMOS platform, enabling both real-time monitoring and post-capture log analysis.

Why use APA?

  • Monitor traffic of operational ground infrastructures

  • Identify datalink issues (delays, provider aborts…)

  • Facilitate datalink problem resolution

  • Track progress of avionics lab testing and integration

  • Troubleshoot and understand test failures

  • Text Hover
Flexible data input sources


Live VHF data
Live A429 data
Log files (CMU, Router…)
APA logs
Fully standard-compliant


VDL2 or ACARS
ATN
ASTERIX
GBAS
APA is the industry’s reference for datalink protocol decoding. It is used by the vast majority of air navigation service providers (ANSPs), avionics and aircraft manufacturers, ground system integrators, and data link service providers worldwide.

Interested?

Are you interested in using APA for datalink protocol analysis? Please contact us to request a quote.