Board Thread:Game Updates/@comment-1820055-20150808000124/@comment-1915363-20150810145405

Vcharng wrote:

what the.... Devs said the proficiency follows the SLOT, but here we can see that they actually follows the plane!

Also, certain aircrafts seems to have proficiency marks by default, it is possible that their marks cannot fall beyond this default value. Makes the farming for Egusa planes all the more sweeter.