Airworthiness Directives; Eurocopter Deutschland Helicopters
airworthiness · Rule · Final rule. · Published 2012-11-20 · Effective 2012-12-26 · 77 FR 69556
Document
Document number
2012-28039
Federal Register citation
77 FR 69556
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Eurocopter Deutschland
Publication date
2012-11-20
Effective date
2012-12-26
FAA docket
Docket No. FAA-2012-0528
Abstract
We are adopting a new airworthiness directive (AD) for all Eurocopter Deutschland GmbH (ECD) Model MBB-BK117 C-2 helicopters with certain Generator Control Units (GCU) installed. This AD requires replacing the GCUs. This AD was prompted by reports of internal short circuits in certain GCUs. These actions are intended to prevent a short circuit, which could result in a loss of electrical generating power, loss of systems required for continued safe flight and landing, and subsequent loss of control of the helicopter.