While jet aircraft can be operated into and from short unpaved runways in regular airline service, increased costs and other limitations dictate improved airfields and minimum terminals. Airport development in areas such as the islands of Micronesia in the Pacific requires consideratin of many factors. Realistic forecasts of requirements are necessary due to high construction costs for improvements and limited financing alternatives. User airline input and participation must be included in the planning and deisgn process. To maintain maximum flexibility in the air service offered, airports in a region should be studied and developed on a system basis.