What are the requirements for launching unmanned free balloons, sonsa balloons, helium balloons and lanterns?

The launch of unmanned free balloons is subject to compliance with the conditions set out in requirement SERA.3140 of Commission Implementing Regulation (EU) 923/2012 of 26 September. This requirement requires compliance with the requirements of Appendix 2 to the aforementioned regulation, which can be consulted at the following link: https://www.boe.es/doue/2012/281/L00001-00066.pdf

• In addition, they must comply with the provisions of Chapter III of Royal Decree 1180/2018, which you can consult through this link:
  You can consult the aforementioned Regulation through this link
• Likewise, the launch is subject to coordination with the air navigation service provider ENAIRE, for which they must be coordinated with the Department of Operational Coordination of ENAIRE through the email (cop@enaire.es).