Airworthiness Directives; The Boeing Company Airplanes
airworthiness · Rule · Final rule. · Published 2017-05-04 · Effective 2017-06-08 · 82 FR 20823
Document
Document number
2017-08828
Federal Register citation
82 FR 20823
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
The Boeing Company
Publication date
2017-05-04
Effective date
2017-06-08
FAA docket
Docket No. FAA-2016-9570
Abstract
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 707 airplanes and Model 720 and 720B series airplanes. This AD was prompted by a determination that undetected web fatigue cracking caused by oil canning may exist in the aft pressure bulkhead web. This AD requires repetitive detailed inspections for any oil canning or cracking of the aft pressure bulkhead web, and corrective actions if necessary. We are issuing this AD to address the unsafe condition on these products.