Airworthiness directives › 2017-10-07
AD 2017-10-07 Airworthiness Directives; The Boeing Company Airplanes
Models named: 737-400 series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Boeing Model 737-400 series airplanes, certificated in any category, as identified in Boeing Special Attention Service Bulletin 737-53-1187, Revision 3, dated July 10, 2015 (“SASB 737-53-1187 R3”).
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
At the applicable times specified in tables 1, 2, and 3 of paragraph 1.E., “Compliance,” of SASB 737-53-1187 R3, except as provided by paragraph (h)(1) and (h)(2) of this AD: Do the applicable inspections to detect cracks in the aft fuselage skin panels; and do all applicable related investigative and corrective actions; in accordance with the Accomplishment Instructions of SASB 737-53-1187 R3, except as required by paragraphs (h)(3) and (h)(4) of this AD. Do all applicable related investigative and corrective actions before further flight. Repeat the applicable inspections thereafter at the applicable intervals specified in tables 1, 2, and 3 of paragraph 1.E., “Compliance,” of SASB 737-53-1187 R3. Accomplishment of a repair in accordance with “Part 4: Repair” of the Accomplishment Instructions of SASB 737-53-1187 R3, except as required by paragraph (h)(3) of this AD, is terminating action for the repetitive inspections required by this paragraph at the repaired locations only.
Unsafe condition
This AD was prompted by an evaluation by the design approval holder (DAH) which indicates that the aft fuselage skin is subject to widespread fatigue damage (WFD) and reports of aft fuselage skin cracking. We are issuing this AD to detect and correct cracking in the aft fuselage skin along the longitudinal edges of the bonded skin doubler, which could result in possible rapid decompression and reduced structural integrity 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