Airworthiness directives › 2017-06-05
AD 2017-06-05 Airworthiness Directives; The Boeing Company Airplanes
Models named: DC-6, DC-6A, DC-6B, C-118A, R6D-1, R6D-1Z. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all The Boeing Company Model DC-6, DC-6A, DC-6B, C-118A, R6D-1, and R6D-1Z airplanes, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as specified in paragraph (i) of this AD: At the applicable time specified in paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin DC6-57A001, dated April 28, 2016, do radiographic, electromagnetic testing high frequency (ETHF), and electromagnetic testing low frequency (ETLF) inspections for cracking of the wing lower skin at station 175, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin DC6-57A001, dated April 28, 2016. Repeat the radiographic, ETHF, and ETLF inspections of any unrepaired areas thereafter at the applicable intervals specified in paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin DC6-57A001, dated April 28, 2016.
Unsafe condition
This AD was prompted by a report of a fuel leak in a Model C-118A airplane that resulted from a crack in the wing lower skin just inboard of the number 2 nacelle attach angle at wing station 175. We are issuing this AD to detect and correct fatigue cracking in the wing lower skin, which could adversely affect the structural integrity of the wing.
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