Summary
We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-400 series airplanes. This AD was prompted by reports of cracks in the upper chord of the overwing stub beams at body station (STA) 578 emanating from the rivet location common to the crease beam inner chord and the overwing stub beam upper chord. This AD requires repetitive inspections for cracking, and related investigative and corrective actions if necessary. We are issuing this AD to prevent the unsafe condition on these products.
Directive Details
AD Number
FAA-2016-5597
Document Number
2016-27640
Type
Rule
Publication Date
November 25, 2016
Effective Date
December 30, 2016
Affected Manufacturer
The Boeing Company
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2016-5597
Topics
Official Documents
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