Airworthiness Directive · Amendment 39-16940 · Wings
The Boeing Company Airplanes
This AD applies to all The Boeing Company Model 757-200, -200PF, -200CB, and -300 series airplanes, certificated in any category.
We are adopting a new airworthiness directive (AD) for all Model 757 airplanes. This AD was prompted reports that several operators have found cracking in the front spar lower chord at the fastener locations common to the side link support fitting at wing station (WS) 292. This AD requires repetitive inspections for corrosion and cracking in this area, and corrective actions if necessary. We are issuing this AD to detect and correct such corrosion and cracking, which, if not corrected, could grow and result in structural failure of the spar.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
At the later of the times in paragraphs (g)(1) and (g)(2) of this AD, do ultrasonic and general visual inspections for cracking and corrosion of the front spar lower chord at the fastener locations common to the side link support fitting at WS 292, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 757-57-0065, Revision 1, dated August 1, 2011. Where Boeing Special Attention Service Bulletin 757-57-0065, Revision 1, dated August 1, 2011, specifies a compliance time “after the date on this service bulletin,” this AD requires compliance at the specified time after the effective date of this AD. Repeat the inspection thereafter at intervals not to exceed 12,000 flight cycles.
(1) At the applicable time specified in paragraph 1.E., “Compliance,” of Boeing Special Attention Service Bulletin 757-57-0065, Revision 1, dated August 1, 2011.
(2) Within 12,000 flight cycles after doing the modification of the nacelle and wing structure specified in Boeing Service Bulletin 757-54-0034 or Boeing Service Bulletin 757-54-0035.
If any cracking or corrosion is found during any inspection required by this AD: Before further flight, repair the cracking or corrosion using a method approved in accordance with the procedures specified in paragraph (j) of this AD.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
