1. ICAO Operation of aircraft: Part 1, International commercial air transport - aeroplanes,” Annex 6 to the Convention on International Civil Aviation, 9 th ed., International Civil Aviation Organization
2. FAA Operating requirements: Domestic, flag, and supplemental operations, Federal Aviation Regulation Part 121, Amdt. 121-374, Federal Aviation Administration www.ecfr.gov/
3. FAA General operating and flight rules, Federal Aviation Regulation Part 91, Amdt. 91-336A, Federal Aviation Administration, Washington, DC, Mar. 4, 2015 www.ecfr.gov/
4. European Commission Commercial air transport operations (Part-CAT), Annex IV to Commission Regulation (EU) No. 965/2012, Brussels, Belgium, Oct. 5, 2012. Published in Official Journal of the European Union
5. EASA Acceptable means of compliance (AMC) and guidance material (GM) to Part-CAT,” Iss. 2, Amdt. 5, European Aviation Safety Agency www.easa.europa.eu/