Airworthiness directives › 2018-20-05
AD 2018-20-05 Airworthiness Directives; The Boeing Company Airplanes
Models named: 727C, 727-100, 727-100C, 727-200, 727-200F series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all The Boeing Company Model 727C, 727-100, 727-100C, 727-200, and 727-200F series 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 (h) of this AD: At the applicable times specified in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 727-53A0235 RB, dated October 12, 2017, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 727-53A0235 RB, dated October 12, 2017. Note 1 to paragraph (g) of this AD: Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 727-53A0235, dated October 12, 2017, which is referred to in Boeing Alert Requirements Bulletin 727-53A0235 RB, dated October 12, 2017.
Unsafe condition
This AD was prompted by the results of a fleet survey, which revealed cracking in bulkhead frame webs at a certain body station. We are issuing this AD to address cracking in the station 259.5 bulkhead frame web from the first stiffener above stringer S-10 to S-13. Such cracking may lead to subsequent failure of the skin and cockpit window surround structure, and could result in rapid decompression.
Affected ADs
None.
Read the original on the Federal Register →
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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