This report is the final deliverable of an internship which is part of the fifth year curriculum of the faculty of Aerospace Engineering at the Delft University of Technology. The two authors had the privilege of conducting their internship at the John A. Volpe National Transportation Systems Center. There they worked in the Environmental Measurement and Modeling Division. The main assignment consisted of finding a method to model the fuel burn of turboprop aircraft flying over America's national parks. To do this the authors first had to get familiarized with the Aviation Environmental Design Tool (AEDT), which is a model capable of calculating the noise and fuel burn emissions of aircraft.