Airworthiness Directives; Air Tractor, Inc. Models AT-250, AT-300, AT-301, AT-302, AT-400, AT-400A, AT-401, AT-401A, AT-402, AT-402A, AT-501, AT-502, and AT-502A Airplanes

This amendment adopts a new airworthiness directive (AD) that applies to certain Air Tractor, Inc. (Air Tractor) Models AT-250, AT- 300, AT-301, AT-302, AT-400, AT-400A, AT-401, AT-401A, AT-402, AT-402A, AT-501, AT-502, and AT-502A airplanes. This AD requires you to install an overturn skid plate in the cockpit area. This AD is the result of reports of foreign material entering the cabin area during an overturn skid of the affected airplanes. The actions specified by this AD are intended to minimize the possibility of dirt or mud penetrating the cockpit in case of an aircraft overturn. Such mud and dirt penetration into the cockpit could lead to pilot asphyxia or injury.