Airworthiness Directives; Agusta S.p.A. and Bell Helicopter Textron Helicopters
airworthiness · Rule · Final rule. · Published 2013-08-13 · Effective 2013-09-17 · 78 FR 49113
Document
Document number
2013-19434
Federal Register citation
78 FR 49113
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Agusta S.p.A. and Bell Helicopter Textron
Publication date
2013-08-13
Effective date
2013-09-17
FAA docket
Docket No. FAA-2013-0145
Abstract
We are adopting a new airworthiness directive (AD) for Agusta S.p.A. (Agusta) Model AB412 and AB412 EP, and Bell Helicopter Textron (Bell) Model 412, 412CF, and 412EP helicopters with certain DART Aerospace Ltd. (Dart) high gear aft crosstubes (crosstube) installed. This AD requires adding a life limit of 10,000 landings to the crosstube and removing from service any crosstubes with more than 10,000 accumulated landings. This AD is prompted by five separate reports of crosstube failures. The actions in this AD are intended to prevent failure of the crosstube and subsequent collapse of the landing gear.