EASA Regulations for Viking Air DHC-3 Otter

5 airworthiness directives and regulations affecting Viking Air DHC-3 Otter.

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New ADs and bulletins for Viking Air DHC-3 Otter, summarized like the ones below, every Monday.

EASA AD 2026-0123

Jul 3, 2026

Time Limits / Maintenance Checks – Airworthiness Limitations Section – Amendment

EASA Airworthiness Directive 2026-0123 is an amendment concerning time limits and maintenance checks in the Airworthiness Limitations Section for GE Aviation Czech H75, H80, and H85 engine models. This directive applies to these engines installed on aircraft such as the Aircraft Industries L410-UVP-E20, L410-NG, Do 28 series, Thrush S-2R series, and Viking Air DHC-3 Otter. It mandates compliance with updated maintenance tasks and life limits to ensure continued airworthiness.

Airworthiness Directive
  • Ge Aviation Czech H75, H80, H85
  • Aircraft Industries L410-UVP-E20
  • Aircraft Industries L410-NG
  • Dornier Do 28
  • Thrush S-2R
  • Viking Air DHC-3 Otter

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 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 2022-0008

Jan 19, 2022

Time Limits / Maintenance Checks – Airworthiness Limitations Section – Amendment

EASA Airworthiness Directive 2022-0008 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting GE Aviation Czech H75, H80, and H85 engine models installed on various aircraft including the Aircraft Industries L410-UVP-E20 and L410-NG, RUAG Aerospace Do 28 series, Thrush Aircraft 510G and S-2R series, and Viking Air DHC-3 Otter aeroplanes. The directive mandates compliance with updated airworthiness limitations published in the GEAC Engine Maintenance Manual to ensure continued safe operation of these engines.

Airworthiness DirectiveSuperseded
  • Ge Aviation Czech H75, H80, H85
  • Aircraft Industries L410-UVP-E20
  • Aircraft Industries L410-NG
  • RUAG Aerospace Do 28
  • Thrush Aircraft 510G
  • Thrush Aircraft S-2R
  • Viking Air DHC-3 Otter

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