Airworthiness Directives; The Boeing Company Airplanes
airworthiness · Rule · Final rule; request for comments. · Published 2016-03-14 · Effective 2016-03-29 · 81 FR 13271
Document
Document number
2016-05515
Federal Register citation
81 FR 13271
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
The Boeing Company
Publication date
2016-03-14
Effective date
2016-03-29
FAA docket
Docket No. FAA-2016-4222
Abstract
We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-300, -400, and -500 series airplanes. This AD requires repetitive inspections for cracking in the horizontal and vertical flanges of the rear spar upper chord of the horizontal stabilizer, and related investigative and corrective actions if necessary. This AD was prompted by a report of cracking in the center section of the horizontal stabilizer. We are issuing this AD to detect and correct cracking of the rear spar center section of the horizontal stabilizer that could lead to departure of the horizontal stabilizer from the airplane.