Airworthiness Directives; Eurocopter France Helicopters
airworthiness · Rule · Final rule; request for comments. · Published 2012-07-27 · Effective 2012-08-13 · 77 FR 44118
Document
Document number
2012-17960
Federal Register citation
77 FR 44118
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Eurocopter France
Publication date
2012-07-27
Effective date
2012-08-13
FAA docket
Docket No. FAA-2012-0766
Abstract
We are adopting a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model EC155B1 helicopters with a certain automated flight control system installed. This AD requires changing the minimum required crew for instrument flight rules (IFR) operations from one pilot to two. This AD is prompted by a report that an EC155B1 helicopter experienced significant intermittent roll oscillations while coupled to the autopilot. These actions are intended to decrease the pilot's workload while experiencing any oscillations during landing, which could result in possible loss of control of the helicopter.