They are both already in application internationally; both are advantageous to passengers, shippers and carriers; they allow greater uniformity of the rules governing international air transportation; they will both contribute to lessening the risk of litigation within the aeronautical industry.
The international applications have to do with communication.
( z1 have-to-do-with :ARG0 ( z2 application :mod ( z3 international ) ) :ARG1 ( z4 communicate ) )