Airworthiness Directives; Eurocopter France Helicopters
airworthiness · Rule · Final rule. · Published 2013-09-17 · Effective 2013-10-22 · 78 FR 57047
Document
Document number
2013-22295
Federal Register citation
78 FR 57047
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Eurocopter France
Publication date
2013-09-17
Effective date
2013-10-22
FAA docket
Docket No. FAA-2013-0119
Abstract
We are adopting a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model AS350 and AS355 helicopters, to require inspecting for a crack in the control lever attachment yokes, and if needed, replacing the tail rotor gearbox (TGB). This AD is prompted by improper casting of TGB casing assemblies, which may lead to cracking. A crack in the control lever attachment yokes could cause a loss of tail rotor pitch control, and consequently, loss of control of the helicopter.