A Study of Attrition in the Domestic General Aviation Fleet.
OPTIMUM COMPUTER SYSTEMS INC WASHINGTON D C
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About 85 of the aircraft ac added to the domestic fleet since 1947 are still registered. About 2 of the fleet is de-registered every year, but this average attrition rate is declining. Annual attrition, about 0.2 among new ac, rises to 2.5 among ac 15 to 20 years old and declines to 1 for older ac, 30 of which are gone. Exports and imports of used ac, accidents, irregularities and theft are negligible. About 10 of the registered fleet is inactive. Usage of single-engine ac shifts from instructional and rental to business and personal as the ac ages multi-engine use is largely executive, business and air taxi. 70 of the active ac are based at 10 of the nations 13,000 airports. About 7 of the fleet is in operation if conditions are generally flyable. Attrition is largely a function of age year-specific, type-specific and year-of-manufacture-specific rate differences are minor. A projection methodology employing a constructed, Standard Attrition Rate, is developed and its use described. Author
- Civilian Aircraft