commercial aviation

Commercial aviation is the part of civil aviation (both general aviation and scheduled airline service) that involves operating aircraft for hire. In most countries, a flight may be operated for money only if it meets three criteria:the pilot must hold a valid commercial pilot's licensethe aircraft must hold a valid commercial registrationthe operator must hold a certificate or some other authorization for commercial operations
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Aviation refers to all activities involving the operation of heavier-than-air aircraft, machines designed for atmospheric flight. The term also describes the organizations and regulatory bodies as well as the personnel related with the operation of aircraft and the industries involved in airplane manufacture, development, and design.
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