Airworthiness Directives; GE Aviation Czech s.r.o. Turboprop Engines
airworthiness · Rule · Final rule. · Published 2018-02-14 · Effective 2018-03-21 · 83 FR 6455
Document
Document number
2018-02994
Federal Register citation
83 FR 6455
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
GE Aviation Czech s.r.o. Turboprop
Publication date
2018-02-14
Effective date
2018-03-21
FAA docket
Docket No. FAA-2017-0658
Abstract
We are adopting a new airworthiness directive (AD) for GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A, M601E-11AS, M601E- 11S, and M601F turboprop engines. This AD requires removal of certain power turbine (PT) disks installed on the affected engines. This AD was prompted by a design review by the manufacturer that determined PT rotors with certain disks have less overspeed margin than originally stated during product certification. We are issuing this AD to address the unsafe condition on these products.