Landing Gear System — Alternate Extension System — Introduction of New Airworthiness Limitation
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must revise their Transport Canada approved maintenance schedules within 30 days of the directive's effective date to include the new inspection task ALI 32-01-00-102. Aircraft with 4400 hours air time or less since the last inspection must comply within 1760 hours air time, while those with more than 4400 hours must comply within 880 hours air time. Compliance must follow the schedule outlined in Temporary Revision ALI-0652 of the Bombardier Regional Jet Maintenance Requirements Manual.
Summary
Canadian Airworthiness Directive CF-2018-31 mandates a new airworthiness limitation for the landing gear system's alternate extension system on Bombardier Inc. model CL-600-2C10, CL-600-2D15, and CL-600-2D24 aircraft. This directive introduces a new maintenance requirement to ensure the operational reliability of the alternate extension system. It applies to these specific Bombardier regional jets and aims to enhance safety through updated inspection intervals.
What changed
CF-2018-31 introduces a new Certification Maintenance Requirement task for the operational check of the landing gear alternate extension system at a reduced interval of 1600 hours air time. This replaces the previous longer intervals of 6000 and 8000 hours, which were found insufficient to cover all critical failure modes. The directive requires revising the maintenance schedule to include this new inspection task as per Temporary Revision ALI-0652.
Why it matters
This directive is important for operators and maintenance organizations because it ensures more frequent checks of the alternate extension system, reducing the risk of undetected failures that could compromise landing gear deployment. Compliance improves aircraft safety and regulatory adherence, helping avoid potential operational disruptions or regulatory penalties. Maintenance teams must update their programs to reflect the new inspection intervals promptly.
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