Although most U.S. airports are standardized in terms of operating procedures, factors such as hangar and fuel availability, and customs operating hours can change quickly, particularly in heavy-volume business-aviation airports. As such, pilots and flight planners must be current with this information to ensure that flight planning proceeds efficiently.

Although most U.S. airports are standardized in terms of operating procedures, factors such as hangar and fuel availability, and customs operating hours can change quickly, particularly in heavy-volume business-aviation airports. As such, pilots and flight planners must be current with this information to ensure that flight planning proceeds efficiently.