Changes to service fees proposed by Nav Canada will not go into  effect as planned on March 1. Nav Canada, the private corporation that provides the country’s air navigation and ATC services, said, “More time is needed to consider the comments and suggestions made by stakeholders.” The comment period closed February 10. According to Nav Canada, the new fees in part “aim to better balance the charges between large and small aircraft.” A decision on the proposals, including implementation dates, is now anticipated for next month.