4.—(1) The commander of an aircraft shall, if possible before, and in any event as soon as practicable after, the termination of its flight in the State with a person on board the aircraft who has been placed under restraint pursuant to section 3 of this Act, notify the appropriate authority—

(a) that such person is under restraint,

(b) of the reasons for such restraint.

(2) The commander of an Irish controlled aircraft shall, if possible before, and in any event as soon as practicable after, the termination of its flight in the territory of any other state with a person on board the aircraft who has been placed under restraint pursuant to section 3 of this Act, notify the appropriate authority—

(a) that such person is under restraint, and

(b) of the reasons for such restraint.