Summary
We are adopting a new airworthiness directive (AD) for various restricted category helicopters. This AD requires cleaning and visually inspecting certain main rotor (M/R) blades and, depending on the outcome of the inspections, repairing or replacing the M/R blades. This AD was prompted by a report of an M/R blade with multiple fatigue cracks around the blade retention bolt hole. The actions are intended to detect a crack in the M/R blade, and prevent failure of the M/R blade and subsequent loss of helicopter control.
Directive Details
AD Number
FAA-2015-3820
Document Number
2016-27767
Type
Rule
Publication Date
November 22, 2016
Effective Date
December 27, 2016
Affected Manufacturer
Various Restricted Category
Criticality
important
Emergency
No
Docket ID
Docket No. FAA-2015-3820
Topics
Official Documents
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