airworthiness · Rule · Final rule. · Published 2013-06-04 · Effective 2013-07-09 · 78 FR 33201
Document
Document number
2013-12900
Federal Register citation
78 FR 33201
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Embraer S.A.
Publication date
2013-06-04
Effective date
2013-07-09
FAA docket
Docket No. FAA-2012-1227
Abstract
We are adopting a new airworthiness directive (AD) for certain Embraer S.A. Model ERJ 190 airplanes. This AD was prompted by reports of cracks on the side stay of the main landing gear (MLG). This AD requires repetitive measurements of the left-hand (LH) and right-hand (RH) MLG side stay support fitting to detect bushing migration, and eventual replacement of the bushing; and a detailed inspection for damage on the LH and RH MLG side stay support assembly, and related investigative and corrective actions if necessary. We are issuing this AD to prevent excessive bearing friction, which might compromise the MLG free fall extension and cause fatigue cracking on the MLG side stay and on its support assembly, resulting in reduced structural integrity of the MLG.