Wilmington International Airport unveiled the results of its terminal capacity study at a meeting Wednesday evening. The study offers strategies for how the airport can accommodate a growing number of passengers and other potential challenges. Those strategies would include major renovations to the airport terminal, check-in kiosks and more. The changes would happen in three phases, with the first costing between $21 and $40 million.“ We evaluated the fact that our passenger growth and the Federal Aviation Administration Forecast would take us places in the near future that we don’t have the capacity for, to maintain the quality, customer experience, the quality service levels,” said John Perrit, chairman of Wilmington Airport Authority. “And part of our challenge and mandate as authority members is to make sure the airport is prepared for the future.” The plan has not yet been given approval. Officials said it is still in the planning stages.