other service problems are no longer just vexing inconveni ences for the individual business traveler. Such delays and other service problems are now viewed by many corporations as major areas of concern for cost control (Bradley, 1989). Ser vice problems, thus, are a strong argument for corporate avia tion growth in the 1990s. Airline companies claim that the service situation is improving. Some independent analysts, however, are less certain about the future of airline service levels. All of these factors may be used as support for pro jections of corporate aviation growth.
The continued competitive pricing by the passenger air lines has been a major factor in the retarded use by corpora tions of company owned aircraft (Bradley, 1989). There are some signs that this practice is beginning to wane; however, significant change is not anticipated before the mid 1990s.
During the 1970s, the major direction of technological innovation in general aviation aircraft was toward the fixed wing jet propulsion aircraft. A
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