Airworthiness directives › 2017-11-02
AD 2017-11-02 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 required by paragraph (i) of this AD, at the applicable times specified in table 1 or table 2 of paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin MD90-55A018, dated June 29, 2016: Do either an open hole eddy current high frequency (ETHF) or a surface eddy current low frequency (ETLF) inspection for any crack in the left and right side horizontal stabilizer rear spar upper caps common to the elevator hinge fitting at station XE = ± 5.931, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin MD90-55A018, dated June 29, 2016. Repeat the inspection thereafter at the time specified in tables 1 through 4, as applicable, of paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin MD90-55A018, dated June 29, 2016.
Unsafe condition
This AD was prompted by a report of cracking in a horizontal stabilizer rear spar cap at station XE = ± 5.931. We are issuing this AD to detect and correct fatigue cracking of the horizontal stabilizer rear spar upper cap, which could 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