The ULM has a restricted certificate of airworthiness, as it does not comply with the requirements of Annex 8 to the Convention on International Civil Aviation.

Circular Instruction 11-05 A of the Directorate-General for Civil Aviation sets out the restrictions applicable to this type of aircraft, among which it is stated that it is only possible to perform private activity without remuneration.

Royal Decree 2876/1982 regulates the use of ultra-light-structured aircraft (ULMs) in national airspace only, so that AESA is not competent to issue permit/flight authorisation in other States.

Since the legislation applicable to this type of aircraft is regulated by each State, it is considered that, in the event that an aircraft with an ultra-light structure goes on a flight to another State, it will be necessary to comply with the provisions governing that territory of ULMs, as required by Article 40 of the Convention on International Civil Aviation.

The aerial operation of ultra-light-structured aircraft in Spain is regulated by Royal Decree 2876/1982, which regulates the registration and use of ultra-light-structured aircraft, in addition to the Order of 24 April 1985 regulating ultra-light flight.

The documentation to be kept on board the ULM is as follows:

In order to operate in airspace controlled by a ULM, you must request an exemption in accordance with Royal Decree 2876/1982 of 15 October 1982 regulating the registration and use of ultra-light-structured aircraft. The activities which would be considered exceptional cause, and for which the applicant must justify the exceptional reason for which he requests such suspension, shall be: