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Airworthiness directives › 2018-03-10

AD 2018-03-10 Airworthiness Directives; The Boeing Company Airplanes

2018-03-19
2018-02-12
39-19183
FAA-2017-0901
Airframe
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Models named: 757-300 series. Read the applicability below — it usually turns on serial or part numbers too.

Applicability*9

(1) This AD applies to all The Boeing Company Model 757-300 series airplanes, certificated in any category. (2) Installation of Supplemental Type Certificate (STC) ST01518SE ( http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgSTC.nsf/0/38b606833bbd98b386257faa00602538/$FILE/ST01518SE.pdf ) does not affect the ability to accomplish the actions required by this AD. Therefore, for airplanes on which STC ST01518SE is installed, a “change in product” alternative method of compliance (AMOC) approval request is not necessary to comply with the requirements of 14 CFR 39.17.

Compliance

Comply with this AD within the compliance times specified, unless already done.

Required actions

Except as provided by paragraph (h) of this AD: At the applicable times specified in paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin 757-53A0107, dated July 20, 2017, do all applicable actions identified as “RC” (required for compliance) in, and in accordance with, the Accomplishment Instructions of Boeing Alert Service Bulletin 757-53A0107, dated July 20, 2017.

Unsafe condition

This AD was prompted by reports of scribe line damage on fuselage skin, caused by sharp tools used during fuselage maintenance. We are issuing this AD to detect and correct scribe line damage. Failure to detect and completely remove scribe lines may lead to fatigue cracking, rapid decompression, and inability of the principal structural element to sustain limit load.

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