The Directive aplies to investigations into civil aviation accidents and incidents which have occurred in the territory of the Community taking into account the international obligations of the Member States. The Directive also aplies outside the territory of the Community to: (i) investigations into accidents involving aircraft registered in a Member State, when such investigations are not carried out by another State; (ii) investigations into serious incidents involving aircraft registered in a Member State or operated by an undertaking established in a Member State, when such investigations are not carried out by another State.