"Advisory Circular"(PDF). Federal Aviation Administration. February 12, 2018. Page 2-7, Table 2-1. Archived(PDF) from the original on October 18, 2020.
"Advisory Circular"(PDF). Federal Aviation Administration. February 12, 2018. Page 2-7, Table 2-1. Archived(PDF) from the original on October 18, 2020.