Airworthiness Directives; Airbus Helicopters Deutschland GmbH (Previously Eurocopter Deutschland GmbH) Helicopters
airworthiness · Rule · Final rule. · Published 2019-03-13 · Effective 2019-04-17 · 84 FR 8963
Document
Document number
2019-04530
Federal Register citation
84 FR 8963
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Airbus
Publication date
2019-03-13
Effective date
2019-04-17
FAA docket
Docket No. FAA-2017-1126
Abstract
We are superseding Airworthiness Directive (AD) 97-26-03 for Eurocopter Deutschland GmbH Model MBB-BK 117 A-1, MBB-BK 117 A-3, MBB- BK 117 A-4, MBB-BK 117 B-1, MBB-BK 117 B-2, and MBB-BK 117 C-1 helicopters. AD 97-26-03 required visual inspections for cracks in the ribbed area of the main rotor (M/R) mast flange (flange). Since we issued AD 97-26-03, we have determined that a certain reinforced M/R mast is not affected by the unsafe condition. This new AD retains the requirements of AD 97-26-03 and removes a certain M/R mast from the applicability. The actions of this AD are intended to address an unsafe condition on these products.