Flight Controls — Multi-Function Spoiler (MFS) — Replacement of MFS 1, MFS 2, and MFS 3 Anti-Rotation Plates
- Published
- Effective
- Deadline
- Replaces
- 2022-47
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must inspect MFS anti-rotation plates part numbers G05770140-103 and G05770160-101 for cracks and hinge bolts for rotation evidence, replacing them with part number G05770140-105 if necessary. Compliance must be achieved within 36 months from 30 August 2022, unless already completed. Incorporation of Bombardier Service Bulletin 700-27-7504 Basic Issue prior to this directive's effective date satisfies compliance requirements.
Summary
Canadian Airworthiness Directive CF-2022-47R1 addresses the replacement of Multi-Function Spoiler (MFS) anti-rotation plates on Bombardier Inc. model BD-700-2A12 aircraft, serial numbers 70006 through 70129. This directive mandates inspection and replacement of MFS 1, MFS 2, and MFS 3 anti-rotation plates to prevent failure due to thin wall design. The directive updates previous requirements to include credit for prior incorporation of Bombardier Service Bulletin 700-27-7504 Basic Issue.
What changed
CF-2022-47R1 supersedes the original AD CF-2022-47 by adding credit for aircraft that had already incorporated the Basic Issue of Bombardier Service Bulletin 700-27-7504 before the effective date. It requires removal, inspection, and replacement of specific MFS anti-rotation plates with redesigned parts to address in-service failures caused by thin wall thickness. The revision clarifies compliance methods and extends the applicability to affected serial numbers.
Why it matters
This directive is critical for maintaining flight control integrity on affected Bombardier BD-700-2A12 aircraft. Failure of the MFS anti-rotation plates can lead to hinge pin wear or fracture, potentially compromising spoiler function and flight safety. Operators, maintenance organizations, and compliance teams must ensure timely inspections and replacements to avoid operational disruptions and regulatory non-compliance.
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