Airworthiness directives › 2019-11-03
AD 2019-11-03 Airworthiness Directives; The Boeing Company Airplanes
Models named: 737-700C, -800, -900ER series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
(1) This AD applies to The Boeing Company Model 737-700C, -800, and -900ER series airplanes, certificated in any category, as identified in Boeing Alert Requirements Bulletin 737-27A1312 RB, dated June 4, 2019. (2) Installation of Supplemental Type Certificate (STC) ST00830SE does not affect the ability to accomplish the actions required by this AD. Therefore, for airplanes on which STC ST00830SE 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 specified by paragraph (h) of this AD: At the applicable times specified in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 737-27A1312 RB, dated June 4, 2019, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 737-27A1312 RB, dated June 4, 2019. Note 1 to paragraph (g): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 737-27A1312, dated June 4, 2019, which is referred to in Boeing Alert Requirements Bulletin 737-27A1312 RB, dated June 4, 2019.
Unsafe condition
This AD was prompted by a report that certain main slat track assemblies were manufactured incorrectly and are affected by hydrogen embrittlement. The FAA is issuing this AD to address main slat track assemblies that have reduced strength due to hydrogen embrittlement. This condition, if not addressed, could result in failure of main slat track assemblies, which could cause the slat to depart and potentially strike the airplane, resulting in injury to airplane occupants and/or preventing continued safe flight and landing.
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