Landing Gear — Lubrication of Main Landing Gear
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected DHC-8-401 and -402 aircraft must lubricate the main landing gear assembly within 500 flight hours or 3 months from April 4, 2022, whichever occurs first, following the procedures in De Havilland SB 84-32-168 Revision A or later approved revisions. Subsequent lubrication must continue at the same intervals to maintain compliance. Maintenance teams should update their schedules and records accordingly.
Summary
Canadian Airworthiness Directive CF-2022-12 mandates repetitive lubrication of the main landing gear (MLG) on De Havilland Aircraft of Canada Limited DHC-8-401 and -402 aeroplanes, serial numbers 4001, 4003, and subsequent. This directive addresses issues with MLG lock actuator assemblies that may fail due to grease degradation over time. The directive ensures continued safe operation by requiring maintenance actions in accordance with De Havilland Service Bulletin 84-32-168.
What changed
CF-2022-12 introduces a mandatory repetitive lubrication requirement for the main landing gear assembly on specified DHC-8 models. It specifies compliance with the procedures outlined in the latest revision of De Havilland Service Bulletin 84-32-168 and sets intervals for lubrication every 500 flight hours or 3 months, whichever occurs first. This is a new regulation aimed at preventing landing gear lock failures.
Why it matters
This directive is critical for operators and maintenance organizations to prevent main landing gear lock failures that could compromise aircraft safety during landing. It highlights the importance of adhering to calendar-based lubrication intervals in addition to flight hour-based maintenance. Compliance ensures reliability of the landing gear mechanism and avoids potential operational disruptions or safety incidents.
More for De Havilland Canada DHC-8
All 58- EASA AD CF-2026-47R1Wing – Wing Access Panels with Un-trimmed Stiffeners and/or Reduced Thickness - InspectionOct 13, 2026
- EASA AD CF-2026-47Wing – Wing Access Panels with Un-trimmed Stiffeners and/or Reduced ThicknessSep 28, 2026
- EASA AD CF-2026-38Maintenance Requirements Manual Part 2 - Airworthiness Limitation Items - AmendmentAug 17, 2026
- EASA AD CF-2026-37Time Limits / Maintenance Checks – Airworthiness Limitation Items – AmendmentAug 6, 2026
Get the next one by email
New ADs and bulletins for De Havilland Canada DHC-8, Havilland DHC-8-401 and Havilland DHC-8-402, summarized like this page, every Monday.