EASA Regulations for De Havilland DHC-8-401

8 airworthiness directives and regulatory documents affecting De Havilland DHC-8-401.

EASA AD CF-2020-51R2

Nacelles/Pylons — Attachment Pin Corrosion

Canadian Airworthiness Directive CF-2020-51R2 addresses corrosion issues in the attachment pins of nacelles and pylons on De Havilland DHC-8-401 and DHC-8-402 aircraft, specifically serial numbers 4001, 4003 through 4550, and 4583 through 4590. The directive mandates inspections and corrective actions to prevent premature corrosion and potential failure of nacelle to landing gear and wing rear spar attachment pins. This directive updates previous versions to clarify applicability and maintain required protective treatments.

Feb 28, 2024

Airworthiness DirectiveMaintenanceSafety MgmtDe Havilland Canada DHC-8De Havilland DHC-8-401De Havilland DHC-8-402

EASA AD CF-2024-01

Landing Gear — Main Landing Gear — Brake Fuse/Shuttle Valve Assembly — Failure Caused by Assembly Error

Canadian Airworthiness Directive CF-2024-01 addresses a failure in the brake fuse/shuttle valve assembly caused by a factory assembly error affecting De Havilland Aircraft of Canada Limited DHC-8-401 and DHC-8-402 aeroplanes, serial numbers 4001, 4003, and subsequent. The directive mandates inspection and possible replacement of affected fuse/shuttle valve assemblies to prevent loss of critical landing gear and braking functions. This AD aims to ensure continued safe operation of the affected aircraft models.

Jan 12, 2024

Airworthiness DirectiveMaintenanceSafety MgmtDe Havilland Canada DHC-8De Havilland DHC-8-401De Havilland DHC-8-402

EASA AD CF-2023-22

Landing Gear — Nose Landing Gear and Doors — Loss of Pivot Pin Retention Bolt

Airworthiness Directive CF-2023-22 is issued by Transport Canada and applies to De Havilland Aircraft of Canada Limited model DHC-8-401 and DHC-8-402 aeroplanes, serial numbers 4001 and 4003 through 4633. The directive addresses the loss of the pivot pin retention bolt on the nose landing gear and associated doors, which could lead to loss of directional control or tire rupture during take-off or landing. It mandates specific inspections, replacements, and maintenance actions to ensure continued airworthiness.

Mar 31, 2023

Airworthiness DirectiveMaintenanceSafety MgmtDe Havilland Canada DHC-8De Havilland DHC-8-401De Havilland DHC-8-402

EASA AD CF-2022-59

Maintenance Requirements Manual, Part 2 Airworthiness Limitation Items — Introduction of New Section 7-00 — Candidate Certification Maintenance Requirements Limitations

Maintenance Requirements Manual, Part 2 Airworthiness Limitation Items — Introduction of New Section 7-00 — Candidate Certification Maintenance Requirements Limitations is a Canadian Airworthiness Directive CF-2022-59 issued by Transport Canada. It applies to De Havilland Aircraft of Canada Limited model DHC-8-401 and -402 aeroplanes of all serial numbers. The directive mandates the incorporation of a new section in the Maintenance Requirements Manual that introduces Candidate Certification Maintenance Requirements limitations for continued airworthiness.

Oct 28, 2022

Airworthiness DirectiveMaintenanceDe Havilland Canada DHC-8De Havilland DHC-8-401De Havilland DHC-8-402

EASA AD CF-2022-29

Landing Gear — Main Landing Gear (MLG) and Doors — Forward Door Linkage Sleeves Missing Greasing Grooves

The Canadian Airworthiness Directive CF-2022-29 addresses an issue with the main landing gear forward door linkage sleeves on De Havilland DHC-8-401 and -402 aircraft, serial numbers 4001, 4003, and subsequent. The directive mandates inspections and corrective actions due to missing greasing grooves on part number 46878-1 sleeves, which could lead to fatigue failure and potential landing gear malfunction. This safety measure aims to prevent asymmetric landing gear configuration and runway excursions.

May 30, 2022

Airworthiness DirectiveMaintenanceSafety MgmtDe Havilland Canada DHC-8De Havilland DHC-8-401De Havilland DHC-8-402

EASA AD CF-2022-21

Stabilizers — Horizontal Stabilizer to Vertical Stabilizer Joint — Non-Conforming Saddle Washer (Radius Filler)

Canadian Airworthiness Directive CF-2022-21 addresses a non-conforming saddle washer (radius filler) issue at the horizontal stabilizer to vertical stabilizer joint on De Havilland Aircraft of Canada Limited model DHC-8-401 and -402 aeroplanes, serial numbers 4001 and 4003 through 4633. The directive mandates inspection and replacement of affected parts to ensure structural integrity. This AD aims to prevent potential structural degradation caused by improperly manufactured saddle washers.

Apr 25, 2022

Airworthiness DirectiveMaintenanceSafety MgmtDe Havilland Canada DHC-8De Havilland DHC-8-401De Havilland DHC-8-402

EASA AD CF-2022-09

Air Conditioning — Avionics Cooling — Integrated Flight Cabinet Failure Due to High Temperatures

Airworthiness Directive CF-2022-09 is issued by Transport Canada and applies to De Havilland Aircraft of Canada Limited model DHC-8-401 and -402 aeroplanes, serial numbers 4095 through 4633. The directive addresses failures in the Integrated Flight Cabinet (IFC) caused by higher-than-expected operating temperatures affecting avionics cooling. This condition could lead to autopilot pitch trim servo runaway and stall warning system failures, impacting aircraft controllability.

Mar 4, 2022

Airworthiness DirectiveMaintenanceSafety MgmtDe Havilland Canada DHC-8De Havilland DHC-8-401De Havilland DHC-8-402

EASA AD CF-2022-02

Stabilizers — Horizontal Stabilizer Lower Centre Skin Panel — Corrosion Damage

Canadian Airworthiness Directive CF-2022-02 addresses corrosion damage on the horizontal stabilizer lower centre skin panel of De Havilland Aircraft of Canada Limited model DHC-8-401 and -402 aeroplanes, serial numbers 4001 and 4003 through 4549. This directive mandates inspection and corrective actions to ensure structural integrity of the horizontal stabilizer. The directive references specific service bulletins for inspection and repair procedures.

Feb 1, 2022

Airworthiness DirectiveMaintenanceSafety MgmtDe Havilland Canada DHC-8De Havilland DHC-8-401De Havilland DHC-8-402