EASA Regulations for Air Tractor AT-400

7 airworthiness directives and regulations affecting Air Tractor AT-400.

Get the next one by email

New ADs and bulletins for Air Tractor AT-400, summarized like the ones below, every Monday.

EASA AD 2022-0234

Dec 1, 2022

Engine Controls — Propeller Governor — Replacement

EASA Airworthiness Directive 2022-0234 is an official regulatory document addressing the replacement of propeller governors on GE Aviation Czech M601, H75, H80, and H85 engines installed on single-engine aeroplanes such as the Air Tractor AT-400 and AT-500 series, Allied Ag Cat G-164 series, and Thrush Aircraft 510G and S-2R series. The directive mandates replacing certain propeller governors with updated serviceable parts to ensure continued airworthiness and safety.

Airworthiness Directive
  • Ge Aviation Czech H75, H80, H85
  • Ge Aviation Czech M601
  • Air Tractor AT-400
  • Air Tractor AT-500
  • Allied Ag Cat G-164
  • Thrush Aircraft 510G
  • Thrush Aircraft S-2R

EASA AD 2022-0034

Mar 4, 2022

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.

Airworthiness Directive
  • Ge Aviation Czech H75, H80, H85
  • Ge Aviation Czech M601
  • Air Tractor AT-400
  • Air Tractor AT-500
  • Grumman G-164
  • Viking Air DHC-3 Otter

EASA AD US-2021-05-14

Mar 29, 2021

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.

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

EASA AD 2017-0151R1

Dec 5, 2018

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.

Airworthiness Directive
  • Ge Aviation Czech H75, H80, H85
  • Ge Aviation Czech M601
  • Thrush Aircraft Inc. S-2R
  • PZL-106 Kruk
  • Air Tractor AT-300
  • Air Tractor AT-400
  • Air Tractor AT-500
  • Allied Ag Cat G-164
  • RUAG Do 28
  • Aircraft Industries L-410

EASA SIB CE-11-57

Sep 16, 2011

Air Tractor, Inc. AT-400 and AT-402 Series Aeroplanes — Engine Mount Section

The Special Airworthiness Information Bulletin SAIB: CE-11-57 is an FAA informational bulletin addressing an airworthiness concern for Air Tractor, Inc. Models AT-400, AT-400A, AT-402, AT-402A, and AT-402B airplanes. It highlights the need for inspections of the engine mount attach tubes for fatigue cracking, particularly at the left hand firewall attach location, but does not mandate regulatory action. The bulletin provides guidance on inspection procedures and reporting for affected aircraft under Type Certificate Data Sheets A9SW and A17SW.

Safety Information Bulletin
  • Air Tractor AT-400
  • Air Tractor AT-400A
  • Air Tractor AT-402
  • Air Tractor AT-402A
  • Air Tractor AT-402B

EASA SIB CE-11-41

Jul 4, 2011

Air Tractor, Inc. AT-300, AT-400 and AT-500 Series - Fuselage-to-Wing Attachment Fittings

The Air Tractor, Inc. AT-300, AT-400 and AT-500 Series - Fuselage-to-Wing Attachment Fittings Special Airworthiness Information Bulletin (SAIB: CE-11-41) informs owners and operators of Air Tractor AT-300, AT-400, and AT-500 series aircraft about potential fatigue cracking in the fuselage frame wing attach tubes. This bulletin covers models including AT-300, AT-301, AT-302, AT-400, AT-400A, AT-401, AT-401A, AT-401B, AT-402, AT-402A, AT-402B, AT-501, AT-502, AT-502A, AT-502B, AT-503, AT-503A, and AT-504. It provides inspection guidance but does not mandate regulatory action.

Safety Information Bulletin
  • Air Tractor AT-300
  • Air Tractor AT-301
  • Air Tractor AT-302
  • Air Tractor AT-400
  • Air Tractor AT-400A
  • Air Tractor AT-401
  • Air Tractor AT-401A
  • Air Tractor AT-401B
  • Air Tractor AT-402
  • Air Tractor AT-402A
  • Air Tractor AT-402B
  • Air Tractor AT-501
  • Air Tractor AT-502
  • Air Tractor AT-502A
  • Air Tractor AT-502B
  • Air Tractor AT-503
  • Air Tractor AT-503A
  • Air Tractor AT-504

EASA SIB CE-11-30

May 11, 2011

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.

Safety Information Bulletin
  • Air Tractor AT-250
  • Air Tractor AT-300
  • Air Tractor AT-400
  • Air Tractor AT-500
  • Air Tractor AT-600
  • Air Tractor AT-800