Airworthiness directives › 2012-09-02
AD 2012-09-02 Airworthiness Directives; Airbus Airplanes
Models named: A300 B2-1C, B2K-3C, B2-203, B4-2C, B4-103, B4-203. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all Airbus Model A300 B2-1C, B2K-3C, B2-203, B4-2C, B4-103, and B4-203 airplanes, certificated in any category.
Compliance
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Required actions
Within 30 months after the effective date of this AD, install 3 retention plates for the gimbal bearings on the THSA upper primary attachment, in accordance with the Accomplishment Instructions of Airbus Mandatory Service Bulletin A300-27-0204, dated March 11, 2011.
Unsafe condition
This AD was prompted by analysis that in a specific failure case of the upper primary attachment of the trimmable horizontal stabilizer actuator (THSA), the THSA upper secondary attachment engaged because it could only withstand the loads for a limited period of time. We are issuing this AD to prevent failure of the secondary load path, which could result in loss of control of the airplane.
Affected ADs
None.
Read the original on the Federal Register →
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1