avt is the conformance test suite (CTS) for the ARINC 653 Standard for Integrated Modular Avionics (IMA).

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The avionics industry is migrating from federated applications to applications that are integrated into a single platform, and must embrace the requirements of ARINC653 and IMA.

An avionics Operating System (OS) implementation claiming conformance to the ARINC Specification 653 has to pass a dedicated set of tests to demonstrate its compliance with the API/OS interface described in the ARINC 653 Specification.

In order to facilitate this, and provide a higher level of confidence, the use of dedicated CTS is recommended.