Airworthiness directives › 2020-05-25
AD 2020-05-25 Airworthiness Directives; The Boeing Company Airplanes
Models named: 757-200, -200PF, -200CB, -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 757-200, -200PF, -200CB, and -300 series airplanes, certificated in any category. (2) Installation of Supplemental Type Certificate (STC) ST01518SE 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
(1) Except as specified by paragraphs (g)(2) and (h) of this AD: At the applicable times specified in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 757-53A0113 RB, dated February 22, 2019, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 757-53A0113 RB, dated February 22, 2019. (2) For airplanes that have been converted from a passenger to freighter configuration using VT Mobile Aerospace Engineering Inc. (VT MAE Inc.) STC ST03562AT: Except as specified by paragraph (h) of this AD, at the times specified for Groups 3 and 5 airplanes, as applicable, in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 757-53A0113 RB, dated February 22, 2019, do all applicable actions for Groups 2, 7, and 10 airplanes as identified in, and in accordance with the Accomplishment Instructions of Boeing Alert Requirements Bulletin 757-53A0113 RB, dated February 22, 2019. Note 1 to paragraph (g): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 757-53A0113, dated February 22, 2019, which is referred to in Boeing Alert Requirements Bulletin 757-53A0113 RB, dated February 22, 2019.
Unsafe condition
This AD was prompted by a report that during a maintenance check an operator discovered cracking of the aft cargo compartment frames in the station 1460 frame web and inner chord between certain stringers. The FAA is issuing this AD to address cracking at the frame web and inner chord; such cracks could propagate until they cause a severed frame, which could result in additional undetected cracking in adjacent fuselage frames, and could ultimately result in reduced structural integrity of the aft cargo frames and consequent rapid decompression 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