The International Civil Aviation Organization Council tracking for certain international flights that requires crews to report their aircraft’s position at least every 15 minutes will become effective in March 2016 and applicable Nov. 8, 2018. The requirement will be formalized as Amendment 39 to Annex 6–Operation of Aircraft, Part I. See link
This new standard is the outcome of recommendations following the review of the disappearance of Malaysia Airlines Flight MH370 while en-route from Kuala Lumpur to Beijing, China, on March 8, 2014.