What is STS Conversion?
Currently, many pilots operate under the STS-ES scenarios defined by AESA. However, European regulations are moving towards a unified environment, so that these scenarios must be converted to European STS: STS-01 and STS-02, included in the Implementing Regulation (EU) 2019/947.
This means that any pilot who is now certified under national STS must adapt to European Requirements to continue flying legally in the specific category.
Why is this conversion done?
The European Union seeks to harmonize aviation safety and establish common standards for all operators.
With this conversion:
Processes between EU countries are simplified.
It is easy to operate in different member states with a single standard.
Security and traceability are increased in specific operations.
Two parallel regulations are prevented from coexisting.

Who does it affect?
To all pilots and operators who currently operate under STS-ES and want to continue to carry out operations in a specific category starting in 2026.
If they don't do the conversion, they won't be able to continue operating under those scenarios.
Key dates
- 2025: Last year to train or fly under STS-ES.
- January 1, 2026: The mandatory requirements of STS-01 and STS-02 come into effect.
- From then on: Only European scenarios will be valid.
What happens if I don't do the conversion?
After January 1, 2026:
- You will not be able to fly in a specific category under STS.
- You may face sanctions.
- Your operations will be paralyzed or delayed.
How can I prepare?
1. Perform STS conversion training
This is the essential step to adapt your certification to European standards.
2. Book your place with us
You can book your place now and secure a place in our calls from January onwards.
Starting in January, we will open dates in several locations so you can choose where to do the practical part and receive your European certification.

Conclusion
The STS Conversion is not just a mandatory procedure: it is a key update to ensure your continuity as a pilot in a specific category and align with European standards that will mark the future of the sector. Booking your place in advance will allow you to complete the conversion without haste, choose your preferred location and ensure that you are ready before the regulations come into force.
Reserving your place in advance will allow you to complete the conversion without haste, choose your preferred location and ensure that you are ready before the regulations come into force.






