Airworthiness Directives; Eurocopter France Helicopters
airworthiness · Rule · Final rule; request for comments. · Published 2012-02-07 · Effective 2012-02-22 · 77 FR 5991
Document
Document number
2012-1118
Federal Register citation
77 FR 5991
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Eurocopter France
Publication date
2012-02-07
Effective date
2012-02-22
FAA docket
Docket No. FAA-2012-0005
Abstract
We are adopting an airworthiness directive (AD) for the Eurocopter France (ECF) Model AS332L2 helicopter and superseding an AD for the Model EC225LP helicopter. This AD is prompted by the manufacturer issuing additional corrective action to prevent failure of the main gearbox (MGB) due to the degradation of the epicyclic module of the MGB and expands the applicability to include the ECF Model AS332L2 helicopter because an investigation showed a failure within the epicyclic reduction gear module resulted in the rupture of the MGB case and separation of the main rotor head of a model AS332L2 helicopter in 2009. These actions are intended to prevent failure of the MGB and subsequent loss of control of the helicopter.