EASA Regulations for Viking Air DHC-6

6 airworthiness directives and regulations affecting Viking Air DHC-6.

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New ADs and bulletins for Viking Air DHC-6, summarized like the ones below, every Monday.

EASA AD CF-2021-42

Dec 7, 2021

Engine Controls — Binding of Fuel Control Unit Push Rod End Bearings

Canadian Airworthiness Directive CF-2021-42 addresses the issue of binding in the fuel control unit (FCU) push rod end bearings on Viking Air Ltd. DHC-6 series 1 through series 400 aircraft, specifically those with lower FCU push rod assemblies part numbers C6CE1398-7, C6CE1398-3 with P/N VSC30-3A rod end bearings, or FAA PMA equivalents. The directive mandates inspections, functional checks, lubrication, and replacement with redesigned parts to prevent engine power control issues. This AD aims to ensure continued safe operation of affected aircraft by mitigating the risk of engine power reduction failure.

Airworthiness Directive
  • Viking Air DHC-6 (Twin Otter)
  • Viking Air DHC-6

EASA AD CF-2020-45R1

Apr 20, 2021

Flight Controls — Loose Rudder Pedal Torque Tube Quadrant Riveted Connection

The Canadian Airworthiness Directive CF-2020-45R1 addresses a flight control issue involving loose riveted connections in the rudder pedal torque tube quadrant assembly on Viking Air Ltd. DHC-6 series 1, 100, 110, 200, 210, 300, 310, 320, and 400 aircraft with serial numbers 001 through 987. This directive mandates inspections and corrective actions to ensure the integrity of the rudder control system and prevent potential loss of rudder control.

Airworthiness Directive
  • Viking Air DHC-6 (Twin Otter)
  • Viking Air DHC-6

EASA AD CF-2018-28

Oct 16, 2018

Flight Controls — Worn Elevator Cables - Inspection

Canadian Airworthiness Directive CF-2018-28 addresses worn elevator cables on Viking Air Ltd. DHC-6 series aeroplanes, including models -1, -100, -110, -200, -210, -300, -310, -320, and -400. The directive mandates inspections for excessive wear at the STA 270.3 pulley location to prevent cable failure and potential loss of aircraft control. It applies to all serial numbers of the affected aircraft.

Airworthiness Directive
  • Viking Air DHC-6 (Twin Otter)
  • Viking Air DHC-6

EASA SIB 2009-37

Sep 16, 2009

Model DHC-6 all series —Twin Otter— aeroplanes - Revision of Maintenance Instructions and Introduction of a Flight Control Cable Return Programme.

EASA Safety Information Bulletin 2009-37 is an informational document addressing Viking Air Limited Model DHC-6 all series "Twin Otter" aeroplanes. It covers revisions to maintenance instructions and introduces a Flight Control Cable Return Programme aimed at improving the inspection and monitoring of flight control cables on these aircraft.

Safety Information Bulletin
  • Viking Air DHC-6

EASA SIB 2007-38R1

Oct 15, 2007

Viking Air Ltd. (Bombardier, De Havilland Canada) DHC-6 Aeroplanes - Inspections of Elevator Control Cables

EASA Safety Information Notice No. 2007-38 Revision 1 addresses inspections of elevator control cables on Viking Air Ltd. (formerly Bombardier and De Havilland Canada) DHC-6 series Twin Otter airplanes. The notice follows a fatal accident involving a DHC-6 in French Polynesia where worn stainless steel elevator control cables were found. It highlights the need for thorough inspections of elevator control cables to detect wear and chafing that may not be visible during routine checks.

Safety Information Bulletin
  • Viking Air DHC-6