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pro vyhledávání: '"Celeste D. Torrez"'
Autor:
Celeste D. Torrez, Brian Kozak
Publikováno v:
Collegiate Aviation Review International. 37:107-116
According to the 2018 Federal Aviation Administration (FAA) aircraft registration database, 10,500 of the 210,000 general aviation aircraft are helicopters (FAA, 2018). While making up only 5% of aircraft, helicopter are found in niche markets that a