2021-05352: Airworthiness Directives; De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
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The FAA proposes to adopt a new airworthiness directive (AD) for certain De Havilland Aircraft of Canada Limited Model DHC-8-400 series airplanes. This proposed AD was prompted by a report that a number of nacelle A-frames were not manufactured in accordance with engineering drawings. This proposed AD would require, depending on airplane configuration, removing the fasteners on the nacelle A-frame side brace sub-assemblies, doing an eddy current inspection for cracking, cold-working the holes, installing oversize fasteners, re- identifying the reworked side brace fitting and A-frame, and repair if necessary. The FAA is proposing this AD to address the unsafe condition on these products.
The agency’s own summary, as published.
What this changes
Amends 1 part of the Code of Federal Regulations — the standing rules this notice rewrites.
Rulemaking docket
We haven’t pulled this rulemaking’s full docket yet. View docket FAA-2021-0183 on Regulations.gov →
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