Airworthiness Directives; Construcciones Aeronauticas, S.A. (CASA), Model CN-235, CN-235-100, and CN-235-200 Series Airplanes
airworthiness · Rule · Final rule. · Published 2001-01-24 · Effective 2001-02-28 · 66 FR 7575
Document
Document number
01-1661
Federal Register citation
66 FR 7575
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2001-01-24
Effective date
2001-02-28
FAA docket
Docket No. 2000-NM-264-AD
Abstract
This amendment adopts a new airworthiness directive (AD), applicable to to all CASA Model CN-235, CN-235-100, and CN-235-200 series airplanes, that requires replacing the upper brackets in frames 33, 34, and 35, with improved brackets that are more fatigue resistant, and reinforcing frame 35. The actions specified by this AD are intended to prevent fatigue cracking in the zone of the fittings connecting the fuselage to stiffener rods located in frames 33, 34, and 35, which could result in reduced structural integrity of the airplane. This action is intended to address the identified unsafe condition.