Airworthiness Directives; Bell Helicopter Textron, Inc. (Bell) Helicopters
airworthiness · Rule · Final rule; request for comments. · Published 2013-06-04 · Effective 2013-06-19 · 78 FR 33204
Document
Document number
2013-12720
Federal Register citation
78 FR 33204
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Publication date
2013-06-04
Effective date
2013-06-19
FAA docket
Docket No. FAA-2013-0470
Abstract
We are adopting a new airworthiness directive (AD) for Bell Model 214B, 214B-1, and 214ST helicopters with a certain tail rotor hanger bearing (bearing) installed. This AD requires inspecting the bearing to determine whether an incorrectly manufactured seal material is installed on the bearing. This AD is prompted by a report that certain bearings were manufactured with an incorrect seal material that does not meet Bell specifications. The actions specified by this AD are intended to prevent loss of bearing grease, failure of the bearing, and subsequent loss of control of the helicopter.