Airworthiness Directives; The Boeing Company Airplanes
airworthiness · Rule · Final rule; request for comments. · Published 2016-11-04 · Effective 2016-11-21 · 81 FR 76848
Document
Document number
2016-26629
Federal Register citation
81 FR 76848
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
The Boeing Company
Publication date
2016-11-04
Effective date
2016-11-21
FAA docket
Docket No. FAA-2016-9306
Abstract
We are adopting a new airworthiness directive (AD) for all The Boeing Company Model MD-90-30 airplanes. This AD requires a detailed inspection of the forward and aft surfaces on the left and right sides at the cant station 1520 bulkhead for any crack in the upper cap and (cap) doubler, webs and doublers, stiffeners, and the lower tee cap between longerons 3 through 11, and repairs if necessary. This AD was prompted by a report of cracking in various structures in the fuselage cant station 1520 bulkhead. We are issuing this AD to detect and correct cracking in the bulkhead, which could result in reduced structural integrity of the airplane.