AppropriateAuthority
urn:aero:airm:1.0.0:ConceptualModel:Subjects:Stakeholders:Organisation:AppropriateAuthority
a) Regarding flight over the high seas: The relevant authority of the State of Registry. b) Regarding flight other than over the high seas: The relevant authority of the State having sovereignty over the territory being overflown.
Source:
ICAO Annex 2,