Airworthiness Directives; Bell Helicopter Textron, Inc. Model 204B, 205A, 205A-1, 205B, 210, 212, 412, 412EP, and 412CF Helicopters
airworthiness · Rule · Final rule; request for comments. · Published 2007-11-20 · Effective 2007-12-05 · 72 FR 65224
Document
Document number
E7-22439
Federal Register citation
72 FR 65224
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Publication date
2007-11-20
Effective date
2007-12-05
FAA docket
Docket No. FAA-2007-0180
Abstract
This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2007-19-53, which was sent previously to all known U.S. owners and operators of the specified Bell Helicopter Textron, Inc. (BHTI) model helicopters by individual letters. This AD requires replacing each affected tail rotor blade (blade) with an airworthy blade with a serial number not listed in the applicability of this AD. This AD is prompted by three incidents in which blade tip weights were slung from the blades during flight causing significant vibration. The actions specified by this AD are intended to prevent loss of a blade tip weight, loss of a blade, and subsequent loss of control of the helicopter.