EASA Regulations for Air Tractor AT-250

EASA AD US-2021-05-14

Flight Controls - Trailing Edge Flap Control System - Inspection / Replacement

Federal Aviation Administration Airworthiness Directive 2021-05-14 is a final rule addressing cracks in the flap torque tube actuator attachment brackets on all Air Tractor, Inc. Models AT-250 through AT-802A airplanes. The directive mandates repetitive visual and dye penetrant inspections of the flap actuator attachment bracket welds and requires replacement of any cracked torque tubes to prevent flap actuator detachment. This AD aims to ensure continued safe operation of affected Air Tractor aircraft by mitigating the risk of sudden flap retraction and potential loss of control.

Mar 29, 2021

Airworthiness DirectiveMaintenanceSafety MgmtAir Tractor AT-250Air Tractor AT-300Air Tractor AT-400Air Tractor AT-401Air Tractor AT-402Air Tractor AT-500Air Tractor AT-600Air Tractor AT-800Air Tractor AT-602Air Tractor AT-802Air Tractor AT-802A

Air Tractor, Inc. (all types & models) - Airframe Structure Corrosion

The Special Airworthiness Information Bulletin SAIB: CE-11-30 is an informational document issued by the FAA addressing airframe structure corrosion in all Air Tractor, Inc. model series AT-250, AT-300, AT-400, AT-500, AT-600, and AT-800 aircraft. It highlights the susceptibility of these aircraft to severe corrosion due to their operation in harsh environments such as chemical dispersal and firebomber missions. The bulletin provides guidance on inspection and repair procedures but does not mandate regulatory action.