Summary
We are adopting a new airworthiness directive (AD) for Bell Helicopter Textron (BHT) Model 412, 412EP, and 412CF helicopters. This AD requires a repetitive inspection of the collective lever for a crack, and if there is a crack, before further flight, replacing the collective lever with an airworthy collective lever. This AD was prompted by a reported failure of a collective lever. The actions are intended to detect a crack in the collective lever, which could lead to failure of the collective lever and subsequent loss of control of the helicopter.
Directive Details
AD Number
FAA-2012-0530
Document Number
2012-27059
Type
Rule
Publication Date
November 15, 2012
Effective Date
December 20, 2012
Affected Manufacturer
Bell Helicopter Textron
Criticality
important
Emergency
No
Docket ID
Docket No. FAA-2012-0530
Topics
Official Documents
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