Airworthiness directives › 2012-20-06
AD 2012-20-06 Airworthiness Directives; The Boeing Company Airplanes
Models named: 737-200, -200C series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to The Boeing Company Model 737-200 and -200C series airplanes, certificated in any category; as identified in Boeing Alert Service Bulletin 737-27A1302, dated April 24, 2012.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
For Group 1 airplanes as identified in Boeing Alert Service Bulletin 737-27A1302, dated April 24, 2012: Within 1,500 flight cycles or 2,000 flight hours after the effective date of this AD, whichever occurs first, inspect the left and right elevator tab control mechanisms, and repair or replace as applicable, in accordance with a method approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA. For a repair method to be approved, the repair must meet the certification basis of the airplane, and the approval must specifically refer to this AD.
Unsafe condition
This AD was prompted by a report of elevator vibration and bearing swage failures. We are issuing this AD to detect and correct discrepancies in the aft attach lugs for the elevator tab control mechanism, which could result in elevator and tab vibration. Consequent structural failure of the elevator or horizontal stabilizer could result in loss of structural integrity and loss of airplane control.
Affected ADs
None.
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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