在一开始的六年中，新框架将只适用于自愿接受框架的国家之间的航班，这意味着ICAO必须鼓励足够的参与度以使该计划起到效果。
For the first six years, the new framework will apply only to flights between countries that have voluntarily adopted it, which means that the ICAO will have to encourage adequate participation for the program to be effective.