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Airworthiness directives › 2014-23-10

AD 2014-23-10 Airworthiness Directives; The Boeing Company Airplanes

2015-01-06
2014-12-02
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Airframe
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Models named: 737-100, -200, -200C, -300, -400, -500 series, 737-300. Read the applicability below — it usually turns on serial or part numbers too.

Applicability*9

(1) This AD applies to The Boeing Company airplanes, certificated in any category, identified in paragraphs (c)(1)(i) and (c)(1)(ii) of this AD. (i) Model 737-100, -200, -200C, -300, -400, and -500 series airplanes, as identified in Boeing Alert Service Bulletin 737-53A1197, dated August 25, 2006. (ii) Model 737-300, -400, and -500 series airplanes, as identified in Boeing Alert Service Bulletin 737-53A1188, Revision 3, dated September 6, 2013. (2) Installation of Supplemental Type Certificate (STC) ST01219SE ( http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0/ebd1cec7b301293e86257cb30045557a/$FILE/ST01219SE.pdf ) does not affect the ability to accomplish the actions required by this AD. For airplanes on which STC ST01219SE ( http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0/ebd1cec7b301293e86257cb30045557a/$FILE/ST01219SE.pdf ) is installed, therefore, 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

This paragraph restates the requirements of paragraph (f) of AD 2008-17-03, Amendment 39-15641 (73 FR 48288, August 19, 2008), with revised service information and airplane groupings. For airplanes identified as Group 1 in Boeing Alert Service Bulletin 737-53A1188, Revision 3, dated September 6, 2013: Do detailed and high frequency eddy current (HFEC) inspections in the web and doubler around the slotted holes in the frame web at stringers 15L and 16L, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 737-53A1188, Revision 2, dated May 9, 2007; or Boeing Alert Service Bulletin 737-53A1188, Revision 3, dated September 6, 2013, except as provided by paragraph (j)(4) of this AD. Do the inspections at the applicable time specified in paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin 737-53A1188, Revision 3, dated September 6, 2013. Do all applicable corrective actions before further flight in accordance with Boeing Alert Service Bulletin 737-53A1188, Revision 2, dated May 9, 2007; or Boeing Alert Service Bulletin 737-53A1188, Revision 3, dated September 6, 2013; except as provided by paragraph (j)(3) of this AD. Repeat the inspections at intervals not to exceed 4,500 flight cycles, until accomplishment of the repair/preventive change in accordance with Boeing Alert Service Bulletin 737-53A1188, Revision 2, dated May 9, 2007; or Boeing Alert Service Bulletin 737-53A1188, Revision 3, dated September 6, 2013; which terminates the repetitive inspection requirements for the airplanes identified in this paragraph. A repair/preventive change done using Boeing Alert Service Bulletin 737-53A1188, dated April 9, 1998; or Boeing Alert Service Bulletin 737-53A1188, Revision 1, dated March 18, 1999; does not terminate the repetitive inspections, but the repetitive inspections may be terminated after the existing kit is replaced with a new kit in accordance with paragraph 3.B., Part II, step 3, or Part III, step 3, of Boeing Alert Service Bulletin 737-53A1188, Revision 2, dated May 9, 2007. As of the effective date of this AD, only Boeing Alert Service Bulletin 737-53A1188, Revision 3, dated September 6, 2013, may be used to do the actions required by this paragraph. Note 1 to paragraph (g) of this AD: Airplanes identified as Group 1 in Boeing Alert Service Bulletin 737-53A1188, Revision 3, dated September 6, 2013, are the same as those identified in Boeing Alert Service Bulletin 737-53A1188, Revision 2, dated May 9, 2007.

Unsafe condition

This AD was prompted by reports of cracks found at the cutout in the web of body station frame 303.9 inboard of stringer 16L, and a new report of cracking found on an airplane not included in the applicability of AD 2008-17-03, Amendment 39-15641 (73 FR 48288, August 19, 2008). We are issuing this AD to detect and correct such cracking, which could prevent the left forward entry door from sealing correctly, and could cause in-flight decompression of the airplane.

Affected ADs

This AD replaces AD 2008-17-03, Amendment 39-15641 (73 FR 48288, August 19, 2008).

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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