What type of inspection helps maintain the airworthiness of an aircraft?

The annual inspection is a comprehensive and thorough examination of an aircraft that plays a crucial role in maintaining its airworthiness. This inspection is mandated by aviation regulations and must be conducted at least once every 12 calendar months. During an annual inspection, various systems, components, and structures of the aircraft are assessed to ensure they are functioning correctly and comply with safety standards. This includes checking the airframe, engines, instruments, and wiring, among other critical areas. Furthermore, an annual inspection often requires the oversight of a certified inspector who can certify the aircraft as airworthy after successful completion of the necessary checks.

While other types of inspections, such as monthly or visual inspections, contribute to aircraft maintenance, they do not replace the need for a thorough annual inspection. Monthly inspections serve as regular checks to catch any potential issues early, and visual inspections can identify obvious defects or damage, but only the annual inspection encompasses a complete assessment necessary to confirm an aircraft's airworthiness.