The proposals can be accessed by Data Originators, who are obliged to transmit aeronautical data and information under their responsibility and who have been granted access to the secure proposal transmission subpage of the aim.eans.ee.

A Data Originator according to the Aviation Act § 57²:

(3) Aeronautical information is prepared by the persons and government agencies under whose jurisdiction the aeronautical information is produced and who, according to their areas of activity, are competent to provide information conforming to the requirements of Annexes 3 and 15 of the 1944 Chicago Convention on International Civil Aviation.

(4) Aeronautical information is prepared by:
1) the Ministry of Economic Affairs and Communications – information concerning the flight operations specified in subsection 1 (2) of this Act, except information specified in clauses 2) – 9) of this subsection;
2) the Ministry of Defence – information concerning the prohibited areas, danger areas, restricted areas, including the use of parts of airspace for target practice, blasting operations and training and other information concerning defence aviation;
3) the Ministry of the Environment – meteorological information in compliance with Annex 3 to the 1944 Chicago Convention on International Civil Aviation, information concerning the migration of birds and establishment of flight restrictions for the purposes of nature protection or research;
4) the Ministry of Social Affairs –information concerning health protection related to aviation;
5) the Ministry of the Interior – information concerning flight restrictions related to air search and rescue, target practice, blasting operations, guaranteeing of security and information concerning migration, including information on visas and passports;
6) the Ministry of Finance – information concerning customs requirements;
7) the Ministry of Agriculture – information concerning agricultural quarantine requirements upon conveyance of animals, plants, animal and plant produce in the state;
8) aerodrome and heliport operators – information concerning the data related to the aerodrome or heliport, the status equipment, facilities and services necessary for their operations, situation at the aerodrome or heliport, information concerning significant hazards and obstacles that affect flight operations in compliance with Annex 15 to the 1944 Chicago Convention on International Civil Aviation, information concerning the procedures on aerodrome or heliport territory and in surrounding airspace, information concerning sunrise and sunset tables and air traffic charges;
9) aeronautical information service providers – information concerning the services provided, the telecommunications, navigation and surveillance equipment required for the provision of air traffic services, air traffic service routes, flight and service procedures and air traffic charges.