Which statement is true concerning required maintenance inspections?

The statement that an annual inspection may be substituted for a 100-hour inspection is accurate because regulatory guidelines often allow for this flexibility. In aviation maintenance, an annual inspection serves as a comprehensive evaluation of the aircraft and is typically more extensive than a 100-hour inspection, which is focused on the operational condition of an aircraft based on its hours in service.

In situations where an annual inspection has been conducted, it meets and exceeds the criteria outlined for a 100-hour inspection, thus negating the requirement for that separate inspection if the aircraft meets the operational threshold. This regulation helps streamline maintenance processes and ensures aircraft safety without redundancy in inspections.

This understanding emphasizes the importance of adhering to the regulatory framework and ensuring that maintenance practices are both efficient and compliant with safety standards.