EASA Regulations for Air Tractor AT-500

4 airworthiness directives and regulations affecting Air Tractor AT-500.

EASA AD 2022-0034

Engine — Outer Liner Dilution Tube — Inspection

EASA Airworthiness Directive 2022-0034 is an airworthiness directive addressing the inspection of the outer liner dilution tube on GE Aviation Czech M601 and H-series engines. It applies to multiple engine models including M601D, M601E, M601F, M601Z, H75, H80, and H85 series, which are installed on various aircraft such as the Air Tractor AT-400 and AT-500 series, Grumman G-164 series, and Viking Air DHC-3 Otter among others. The directive mandates repetitive borescope inspections of specific outer liner parts to detect cracks and prevent potential engine power loss.

Mar 4, 2022

Airworthiness DirectiveMaintenanceSafety MgmtGe Aviation Czech H75, H80, H85Ge Aviation Czech M601Air Tractor AT-400Air Tractor AT-500Grumman G-164Viking Air DHC-3 Otter

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

EASA AD 2017-0151R1

Engine — Exhaust System — Modification

EASA Airworthiness Directive 2017-0151R1 is a regulatory document addressing modification requirements for the exhaust system of GE Aviation Czech M601, H75, H80, and H85 series engines. These engines are commonly installed on aircraft such as Thrush Aircraft Inc. S-2R, PZL-106 Kruk, Air Tractor AT-300/400/500 series, Allied Ag Cat G-164 series, RUAG Do 28, and Aircraft Industries L-410. The directive mandates modifications to prevent potential power turbine or quill shaft spline failures that could lead to engine overspeed and subsequent safety hazards.

Dec 5, 2018

Airworthiness DirectiveMaintenanceSafety MgmtGe Aviation Czech H75, H80, H85Ge Aviation Czech M601Thrush Aircraft Inc. S-2RPZL-106 KrukAir Tractor AT-300Air Tractor AT-400Air Tractor AT-500Allied Ag Cat G-164RUAG Do 28Aircraft Industries L-410

EASA SIB CE-11-30

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.

May 11, 2011

Safety Information BulletinMaintenanceSafety MgmtAir Tractor AT-250Air Tractor AT-300Air Tractor AT-400Air Tractor AT-500Air Tractor AT-600Air Tractor AT-800