airworthiness · Rule · Final rule. · Published 2017-08-21 · Effective 2017-09-25 · 82 FR 39523
Document
Document number
2017-17085
Federal Register citation
82 FR 39523
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
MD
Publication date
2017-08-21
Effective date
2017-09-25
FAA docket
Docket No. FAA-2017-0270
Abstract
We are superseding Airworthiness Directive (AD) 2014-16-01 for MD Helicopters, Inc. (MDHI), Model MD900 helicopters. AD 2014-16-01 required an eddy current inspection of the main rotor upper hub assembly (upper hub) for a crack. This AD requires additional inspections and replacing the fillet seal. This AD was prompted by three additional reports of upper hub cracks. The actions of this AD are intended to prevent an unsafe condition on these products.