The Code of Federal Regulations (CFR) is the codification of general and permanent rules published in the Federal Register by the executive departments and agencies of the federal government. It is divided into 50 titles representing broad fields that are subject to federal regulations. Each CFR volume is updated once per calendar year and released quarterly. To ensure safe skies, the Federal Aviation Administration (FAA) regulates various aircraft activities, from regular air carriers to balloons and drones. These Federal Aviation Regulations, called FARs, are part of Title 14 of the Code of Federal Regulations (CFR). Title 14 of the Code of Federal Regulations contains the Federal Aviation Regulations, or FARs (CFR). As an operator, you must adhere to the airworthiness standards as dictated by your part number under 14 CFR. Regular air carriers, such as major US airlines, freight operators, and regional air carriers, are examples of carriers in Part 121. Carriers of Part 91 are private operators, while carriers of Part 129 are international carriers and operators. Foreigners licensed for American aircraft.
There are some types of aircraft that are certified under Part 25 of the CFR, the airworthiness criteria described in Part 25 of the CFR apply to aircraft in the category of transport. For example, transport class aircraft can fall into two classes: aircraft with at least ten seats Or Maximum Takeoff Weight (MTOW) over 12,500 lbs. Or helicopters with 19+ seats, or MTOW over 19,000 lbs. Transport class aircraft are designed and certified under CFR Part 25 and Part 26, while Transport class helicopters fall under Part 29. Likewise, the Airbus 319, 320 and 321 series aircraft and Boeing 737 MAX turbulent aircraft are FAR Part 25 certified. FEMA is widely recognized by aviation regulatory agencies in the United States, Canada and Europe.