Airworthiness directives › 2014-13-11
AD 2014-13-11 Airworthiness Directives; The Boeing Company Airplanes
Models named: 707-100 long body, -200, -100B long body, -100B short body series, 707-300, -300B, -300C, -400 series, 720, 720B series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to The Boeing Company airplanes, certificated in any category, identified in paragraphs (c)(1) and (c)(2) of this AD. (1) All Model 707-100 long body, -200, -100B long body, and -100B short body series airplanes; and Model 707-300, -300B, -300C, and -400 series airplanes. (2) All Model 720 and 720B series airplanes.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) Except as specified in paragraphs (j)(1) and (j)(2) of this AD, at the applicable time specified in paragraph 1.E., “Compliance,” of Boeing 707 Alert Service Bulletin A3539, dated April 26, 2013: Do a detailed inspection of the fuselage skin for scribe lines, in accordance with the Accomplishment Instructions of Boeing 707 Alert Service Bulletin A3539, dated April 26, 2013. If no scribe line is found: Before further flight, do surface finish restoration, in accordance with the Accomplishment Instructions of Boeing 707 Alert Service Bulletin A3539, dated April 26, 2013. (2) The inspection exceptions described in paragraph 1.E., “Compliance,” of Boeing 707 Alert Service Bulletin A3539, dated April 26, 2013, apply to paragraph (g)(1) of this AD.
Unsafe condition
This AD was prompted by reports of scribe-line-related fatigue cracks on Model 727 airplanes, which are similar in design to the Model 707 airplanes, and Model 720 and 720B series airplanes. We are issuing this AD to detect and correct scribe lines, which can develop into fatigue cracks in the skin and cause rapid decompression of the airplane.
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