Airworthiness Directives; Air Tractor, Inc. AT-400, AT-500, AT-600, and AT-800 Series Airplanes

Summary

The Federal Aviation Administration (FAA) is revising an earlier proposed airworthiness directive for Air Tractor, Inc. AT-400, AT-500, AT-600, and AT-800 series airplanes, which would replace the existing directive requiring repetitive engine mount inspections for certain models.