Which AFTO 781 form is primarily used for documenting calendar and hourly inspections?

The AFTO 781K form is specifically designed for recording calendar and hourly inspections of aircraft. This form serves as a comprehensive documentation tool that tracks the maintenance and inspection requirements based on both flight hours and calendar time. Using the AFTO 781K, maintenance personnel can ensure that inspections are conducted within the prescribed intervals, which helps in maintaining the airworthiness and safety of the aircraft.

This particular form includes sections to detail the type of inspection performed, as well as any discrepancies or actions taken during the inspection, providing clear visibility into the maintenance history of the aircraft. Such systematic documentation is crucial for regulatory compliance and for ensuring that all inspections are completed in a timely manner, adhering to military and safety standards.

The other forms listed have different purposes, focusing on different aspects of maintenance documentation or record-keeping rather than specifically addressing calendar and hourly inspections.