EASA Regulations for Air Tractor AT series

5 airworthiness directives and regulations affecting Air Tractor AT series.

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

EASA AD 2024-0040-E

Feb 8, 2024

Engine – Centrifugal Compressor Case – Inspection

EASA Airworthiness Directive 2024-0040-E is an emergency directive addressing a potential unsafe condition in GE Aviation Czech M601 series engines installed on various aircraft including the LET L-410, Air Tractor AT series, Grumman G-164, and others. The directive mandates inspection of the centrifugal compressor case for cracks and restricts installation of affected parts. It applies to engines with specific part numbers M601-154.55 and M601-154.65 unless previously inspected and cleared.

Airworthiness DirectiveSuperseded
  • Ge Aviation Czech M601
  • LET L-410
  • Air Tractor AT series
  • Grumman G-164

EASA AD 2021-0264R1

Mar 28, 2023

Engine — Critical Parts — Replacement

EASA Airworthiness Directive 2021-0264R1 is a regulatory update addressing critical parts replacement for GE Aviation Czech M601 series engines installed on various aircraft including the Aircraft Industries L-410 and L-420, Air Tractor AT series, Allied Ag Cat G-164, Thrush S-2R, and Viking Air DHC-3 Otter. The directive focuses on ensuring the replacement and proper identification of affected compressor cases and drums to prevent engine failures. It mandates compliance with specific life limits and logbook corrections to maintain engine airworthiness.

Airworthiness Directive
  • Ge Aviation Czech M601
  • Aircraft Industries L-410
  • Aircraft Industries L-420
  • Air Tractor AT series
  • Allied Ag Cat G-164
  • Thrush S-2R
  • Viking Air DHC-3 Otter

EASA AD 2021-0154

Jul 1, 2021

Engine – Propeller Shaft – Replacement [Life Limit]

EASA Airworthiness Directive 2021-0154 is an airworthiness directive addressing GE Aviation Czech M601 series engines installed on various aircraft including Aircraft Industries L-410 and L-420, Air Tractor AT series, Grumman G-164, PZL-106, Dornier Do 28, Thrush S-2R, Viking DHC-3 Otter, Zlin Z-37T, and PAC FU-24. The directive mandates replacement and life limit implementation for propeller shafts with specific part numbers to ensure continued airworthiness and prevent potential propeller shaft failure.

Airworthiness DirectiveSuperseded
  • Ge Aviation Czech M601
  • Aircraft Industries L-410
  • Aircraft Industries L-420
  • Air Tractor AT series
  • Grumman G-164
  • PZL-106
  • Dornier Do 28
  • Thrush S-2R
  • Viking DHC-3 Otter
  • Zlin Z-37T
  • PAC FU-24

EASA AD 2021-0060

Mar 3, 2021

Time Limits / Maintenance Checks – Airworthiness Limitations Section / 04-10 Limitations and 04-20 Inspections – Amendment

EASA Airworthiness Directive 2021-0060 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting GE Aviation Czech M601 engine models including M601D-1, M601D-2, M601D-11, M601D-11NZ, and M601Z. These engines are installed on various aircraft such as Air Tractor AT series, Allied Ag Cat G-164 series, Pacific Aerospace FU-24, PZL-106 Kruk series, RUAG Do 28 series, Thrush S-2R series, Viking DHC-3 Otter, and Zlin Z 37 T and Z 137 T. The directive mandates compliance with updated airworthiness limitations and maintenance tasks to ensure continued safe operation.

Airworthiness DirectiveSuperseded
  • Ge Aviation Czech M601
  • Air Tractor AT series
  • Allied Ag Cat G-164 series
  • Pacific Aerospace FU-24
  • PZL-106 Kruk series
  • RUAG Do 28 series
  • Thrush S-2R series
  • Viking DHC-3 Otter
  • Zlin Z 37 T
  • Zlin Z 137 T

EASA AD 2020-0201R2

Jan 14, 2021

Engine Fuel & Control — Fuel Control Unit — Replacement

EASA Airworthiness Directive 2020-0201R2 is an update addressing the replacement of fuel control units (FCU) on GE Aviation Czech M601 and H80 series engines installed on various aircraft including the Aircraft Industries L-410, Air Tractor AT series, Allied Ag Cat G-164, PZL-106 Kruk, RUAG Do 28, Thrush S-2R, and Viking Air DHC-3 Otter. The directive mandates replacement of affected FCUs due to improperly installed rubber cuff sealings that can cause engine power fluctuations and potential loss of control. It applies to all serial numbers of the listed engine models with specific affected FCU part and serial numbers detailed in the directive.

Airworthiness Directive
  • Ge Aviation Czech H75, H80, H85
  • Ge Aviation Czech M601
  • Aircraft Industries L-410
  • Air Tractor AT series
  • Allied Ag Cat G-164
  • PZL-106 Kruk
  • RUAG Do 28
  • Thrush S-2R
  • Viking Air DHC-3 Otter