importantRule

AD FAA-2014-0378

Airworthiness Directives; Agusta S.p.A. Helicopters

Summary

We are adopting a new airworthiness directive (AD) for Agusta S.p.A. (Agusta) Model AB412 and AB412EP helicopters with a certain rotor brake pinion installed. This AD requires inspecting the rotor brake pinion for a crack, and replacing it if there is a crack. This AD is prompted by a report of a rotor brake pinion failure. These actions are intended to detect a crack on the rotor brake pinion and prevent failure of the rotor brake pinion, which could lead to detachment of parts inside the transmission and subsequent loss of control of the helicopter.

Directive Details

AD Number

FAA-2014-0378

Document Number

2014-13838

Type

Rule

Publication Date

June 19, 2014

Effective Date

July 7, 2014

Affected Manufacturer

Agusta S.p.A.

Criticality

important

Emergency

Docket ID

Docket No. FAA-2014-0378

Topics

Air transportationAircraftAviation safetyIncorporation by referenceSafety

Official Documents

View PDF View on Federal Register

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