Airworthiness directives › 2019-24-17
AD 2019-24-17 Airworthiness Directives; The Boeing Company Airplanes
Models named: MD-90-30. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all The Boeing Company Model MD-90-30 airplanes, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as specified in paragraph (h) of this AD: At the applicable times specified in paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin MD90-57A031, dated March 19, 2019, do all applicable actions identified as “RC” (required for compliance) in, and in accordance with, the Accomplishment Instructions of Boeing Alert Service Bulletin MD90-57A031, dated March 19, 2019. Note 1 to paragraph (g) of this AD: Boeing Alert Service Bulletin MD90-57A031, dated March 19, 2019, refers to Boeing Drawing SN09570007, as data supplied with this service bulletin. If the pages of Boeing Drawing SN09570007 are illegible, guidance can be found in Boeing Multi Operator Message MOM-MOM-19-0549-01B, dated October 4, 2019.
Unsafe condition
This AD was prompted by reports indicating that certain center wing stringers and skins are potentially susceptible to cracking. The FAA is issuing this AD to address cracking of the center wing stringers and skins, which could result in the inability of the structure to sustain limit loads, and adversely affect the structural integrity of the airplane.
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