EASA Regulations for Grumman G-164

5 airworthiness directives and regulations affecting Grumman G-164.

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New ADs and bulletins for Grumman G-164, 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 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 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 2021-0052

Feb 24, 2021

Engine – Propeller Shaft – Replacement [Life Limit]

EASA Airworthiness Directive 2021-0052 is an airworthiness directive addressing GE Aviation Czech M601 series engines installed on various aircraft including the LET L-410 series, Air Tractor AT series, Grumman G-164, PZL-106, Dornier Do 28, Thrush S-2R, DHC-3 Otter, Zlin Z-37T, and PAC FU-24. The directive focuses on the replacement and life limit implementation of propeller shafts, specifically part numbers M601-6081.2, M601-6081.4, and M601-6081.6. It mandates compliance to ensure continued airworthiness and prevent propeller shaft failure.

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

EASA SIB SAFO15007

Jul 15, 2015

Pratt & Whitney R-985 (Wasp Junior) Engines — Flyweight Hardware Failures

SAFO 15007 is a Safety Alert for Operators issued by the FAA regarding Pratt & Whitney R-985-AN-14B (Wasp Junior) engines. It addresses failures caused by fatigued flyweight screws and improperly modified or under-torqued expanders, which have led to in-flight engine failures and forced landings. The alert also applies to other Pratt & Whitney Wasp Jr (R-985 Series) and Wasp (R-1340 Series) engines used in various aircraft including Air Tractor AT-301 and 401, Ayres Thrush, Beechcraft D17 and 18 series, Boeing-Stearman 75, de Havilland DHC-2 and DHC-3, Gee Bee, Grumman G-21 and G-164, Howard DGA-6, -11, -15, North American T-6, and Weatherly 201 and 620.

Safety Information Bulletin
  • Air Tractor AT-301
  • Air Tractor AT-401
  • Ayres Thrush
  • Beechcraft D17
  • Beechcraft 18
  • Boeing-Stearman 75
  • de Havilland DHC-2
  • de Havilland DHC-3
  • Gee Bee
  • Grumman G-21
  • Grumman G-164
  • Howard DGA-6
  • Howard DGA-11
  • Howard DGA-15
  • North American T-6
  • Weatherly 201
  • Weatherly 620