Summary
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8-400 series airplanes. This AD was prompted by reports of difficulties in opening the airstair door. This AD requires inspecting the structure and gearbox drain paths for blockages by sealant, and removing any blockages. We are issuing this AD to detect and correct drain paths blocked by sealant, resulting in an airstair door that is unable to be opened, which could hinder evacuation in the event of an emergency.
Directive Details
AD Number
FAA-2011-1088
Document Number
2012-6531
Type
Rule
Publication Date
March 21, 2012
Effective Date
April 25, 2012
Affected Manufacturer
Bombardier, Inc.
Criticality
critical
Emergency
Yes
Docket ID
Docket No. FAA-2011-1088
Topics
Official Documents
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