The dataset contains traces concerning the behaviour of critical software tasks of an embedded Flight Management System and generated by during the execution of multiple flight plans. Traces have been generated under diverse conditions spanning both normal execution and anomalous execution due to attacks/irregularities. Such behavioural traces are used as training samples to build the AI-based anomaly detection system which is part of the TEACHING final demonstrators. The dataset is released under a permissive Creative Commons Attribution Non-Commercial ShareAlike 4.0 International public license (CC BY-NC-SA). The dataset is publicly available on the TEACHING Github at https://github.com/EU-TEACHING/teaching-avionics-dataset.