Summary
We are adopting a new airworthiness directive (AD) for certain Agusta S.p.A. Model AB412 and AB412 EP helicopters. This AD requires inspecting the tail rotor (T/R) drive shaft flanged adapter (adapter) for a crack and removing the adapter from service if there is a crack. This AD is prompted by a report of a crack found in an adapter. These actions are intended to detect a crack in the adapter and prevent failure of the T/R drive shaft, which could result in reduced control of the helicopter.
Directive Details
AD Number
FAA-2015-1936
Document Number
2015-13343
Type
Rule
Publication Date
June 9, 2015
Effective Date
June 24, 2015
Affected Manufacturer
Agusta S.p.A.
Criticality
important
Emergency
No
Docket ID
Docket No. FAA-2015-1936
Topics
Official Documents
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