Airworthiness directives › 2016-25-07
AD 2016-25-07 Airworthiness Directives; The Boeing Company Airplanes
Models named: 767-200, -300 series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
(1) This AD applies to The Boeing Company Model 767-200 and -300 series airplanes, certificated in any category, as identified in Boeing Alert Service Bulletin 767-53A0267, Revision 1, dated August 4, 2016. (2) Installation of Supplemental Type Certificate (STC) ST01920SE ( http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgSTC.nsf/0/38B606833BBD98B386257FAA00602538?OpenDocument&Highlight=st01920se ) does not affect the ability to accomplish the actions required by this AD. Therefore, for airplanes on which STC ST01920SE is installed, 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
Before the accumulation of 60,000 total flight cycles, or within 36 months after the effective date of this AD, whichever occurs later, but not earlier than 37,500 total accumulated flight cycles: Replace the aft pressure bulkhead at Station 1582 of Section 48 with a new, improved aft pressure bulkhead, and perform all applicable related investigative and corrective actions, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 767-53A0267, Revision 1, dated August 4, 2016; except as required by paragraph (h) of this AD. Do all applicable related investigative and corrective actions before further flight. Accomplishing the replacement in this paragraph terminates all requirements of the ADs identified in paragraphs (g)(1), (g)(2), and (g)(3) of this AD. (1) AD 2004-05-16, Amendment 39-13511 (69 FR 10917, March 9, 2004). (2) AD 2004-14-19, Amendment 39-13728 (69 FR 42549, July 16, 2004). (3) AD 2009-06-19, Amendment 39-15856 (74 FR 12243, March 24, 2009).
Unsafe condition
This AD was prompted by an evaluation by the design approval holder (DAH) indicating that the aft pressure bulkhead at Station 1582 is subject to widespread fatigue damage (WFD). We are issuing this AD to prevent fatigue cracking in the radial web lap splices of the aft pressure bulkhead. Such cracking could result in rapid decompression and consequent reduced structural integrity of the airplane.
Affected ADs
This AD affects the ADs specified in paragraphs (b)(1), (b)(2), and (b)(3) of this AD. (1) AD 2004-05-16, Amendment 39-13511 (69 FR 10917, March 9, 2004). (2) AD 2004-14-19, Amendment 39-13728 (69 FR 42549, July 16, 2004). (3) AD 2009-06-19, Amendment 39-15856 (74 FR 12243, March 24, 2009).
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