What is the minimum requirement for renewal of an inspection authorization that has been effective for one year?

The minimum requirement for the renewal of an inspection authorization after it has been effective for one year is based on the completion of inspections involving significant work on aircraft. Specifically, a technician must have performed eight inspections of major repairs or major alterations during the preceding 24 months of holding the authorization.

This requirement ensures that a technician remains engaged in relevant inspections that maintain or enhance their expertise and familiarity with current practices and regulations. Major repairs and major alterations generally involve significant changes to an aircraft's structure, systems, and performance, requiring continuous experience to uphold safety standards in the aviation industry.

The other options do not satisfy the renewal criteria outlined by the Federal Aviation Administration (FAA). They either focus on a lesser number of inspections or types of inspections that do not reflect the level of involvement and expertise required for the renewal of the inspection authorization.