airworthiness · Rule · Final rule. · Published 2015-07-13 · Effective 2015-08-17 · 80 FR 39941
Document
Document number
2015-16939
Federal Register citation
80 FR 39941
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Kaman Aerospace Corporation (Kaman)
Publication date
2015-07-13
Effective date
2015-08-17
FAA docket
Docket No. FAA-2014-0758
Abstract
We are adopting a new airworthiness directive (AD) for Kaman Model K-1200 helicopters with certain main rotor blades (MRB) installed. This AD requires inspecting each MRB for a crack or damage. This AD was prompted by a report that a crack was found on an MRB during a tear-down inspection. The actions are intended to detect a crack in the MRB, which could lead to failure of the MRB and subsequent loss of control of the helicopter.