AD 2017-20-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc., Airplanes |
Unsafe Condition
Laminated shims may have been improperly installed at a certain wing tie beam, potentially leading to degradation of structural integrity and cracking of the pressure floor.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Revise the maintenance or inspection program to incorporate certification maintenance requirement tasks that introduce revised checks of the tie beam.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 12 months of the effective date (November 15, 2017).
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Affected Aircraft
Bombardier, Inc., Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601 Variant), and CL-600-2B16 (CL-601-3A and CL-601-3R Variants) airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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