Summary
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.
Directive Details
AD Number
FAA-2013-0470
Document Number
2013-12720
Type
Rule
Publication Date
June 4, 2013
Effective Date
June 19, 2013
Affected Manufacturer
Bell Helicopter Textron, Inc. (Bell)
Criticality
important
Emergency
No
Docket ID
Docket No. FAA-2013-0470
Topics
Official Documents
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