What must air carriers comply with according to the FAR?

Air carriers are required to comply with safety and operational regulations as outlined in the Federal Aviation Regulations (FAR). These regulations are designed to ensure the highest levels of safety for passengers and crew. They cover a wide range of topics, including aircraft operation, maintenance, and the conduct of flight attendants and pilots. The emphasis on safety is critical in the aviation industry, as it directly impacts the well-being of everyone onboard and the efficiency of airline operations.

While other options, such as airplane design standards and food service regulations, play important roles in the overall operation of an airline, they are not as overarching or critical as the core safety and operational regulations established by the FAR. Compliance with these regulations helps mitigate risks, enhance the reliability of air travel, and maintain public trust in the aviation system. Thus, the safety and operational regulations are fundamental to the operations of air carriers.