Published at Sunday, March 24th, 2019 - 10:42:13 AM. Type of airline. By Adriane Lorenz.
Airline financing is quite complex since airlines are highly leveraged operations. Not only must they purchase (or lease) new airliner bodies and engines regularly they must make major long-term fleet decisions with the goal of meeting the demands of their markets while producing a fleet that is relatively economical to operate and maintain; comparably Southwest Airlines and their reliance on a single airplane type (the Boeing 737 and derivatives) with the now defunct Eastern Air Lines which operated 17 different aircraft types each with varying pilot engine maintenance and support needs.
Despite continuing efficiency improvements from the major aircraft manufacturers the expanding demand for global air travel has resulted in growing greenhouse gas (GHG) emissions. Currently the aviation sector including US domestic and global international travel make approximately 1.6 percent of global anthropogenic GHG emissions per annum. North America accounts for nearly 40 percent of the world s GHG emissions from aviation fuel use. 78
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