AD 2011-21-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Inc | Airworthiness Directives; Bombardier Inc. Model DHC-8-102, -103, -106, -201, -202, -301, -311, and -315 Airplanes; Equipped With Certain Cockpit Door Installations |
| aircraft | Aviat | Various | Airworthiness Directives; Bombardier Inc. Model DHC-8-102, -103, -106, -201, -202, -301, -311, and -315 Airplanes; Equipped With Certain Cockpit Door Installations |
Unsafe Condition
The door lower hinge block rotated due to attachment with only one bolt, causing hinge pin disengagement and excessive deflection. This could lead to cockpit door breakage and uncontrolled release during decompression. Additionally, after Modsum 8Q900267, a failure to complete the cockpit door removal function test was reported, potentially preventing emergency egress.
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Required Actions
Inspect and rework the cockpit door striker plate, replace the latch block, and ensure compliance with the specified service bulletin. Actions must follow the detailed procedures outlined in the referenced service information.
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Compliance Time
Within 12 months of the effective date (November 16, 2011)
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Affected Aircraft
Bombardier Model DHC-8-102, -103, -106, -201, -202, -301, -311, and -315 airplanes, serial numbers 003 through 557, equipped with cockpit door installations listed in Table 1 of the AD.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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