AD 2011-09-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc. Model DHC-8-101, -102, -103, -106, -201, -202, -301, -311, -315, -401, and -402 Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Bombardier, Inc. Model DHC-8-101, -102, -103, -106, -201, -202, -301, -311, -315, -401, and -402 Airplanes |
Unsafe Condition
Trapped water on the bottom of the cockpit windshield frames (or lower windshield frames) can result in corrosion of anchor nuts and lower windshield frames, compromising the fastening function and leading to potential structural degradation or loss of the windshield during flight. Additionally, water ingress into the cockpit can cause malfunctions or failures of electrical and electronics systems in the cockpit instrument panels.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install a drain system for the lower windshield frames. For Model DHC-8-401 and -402 airplanes, inspect for corrosion of anchor nuts and window frames, and replace any corroded anchor nut with a new or serviceable one, or contact the manufacturer for repair instructions and perform the repair.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 12 months of the effective date (June 6, 2011)
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Affected Aircraft
Bombardier, Inc. Model DHC-8-101, -102, -103, -106, -201, -202, -301, -311, -315, -401, and -402 airplanes, with specific serial number ranges as detailed in the AD.
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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