airworthiness · Rule · Final rule; request for comments. · Published 2019-03-01 · Effective 2019-03-18 · 84 FR 6962
Document
Document number
2019-03641
Federal Register citation
84 FR 6962
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Safran Helicopter
Publication date
2019-03-01
Effective date
2019-03-18
FAA docket
Docket No. FAA-2018-0949
Abstract
We are adopting a new airworthiness directive (AD) for all Safran Helicopter Engines, S.A. (Safran Helicopter Engines), ASTAZOU XIV B and H model engines with certain 3rd-stage turbine wheels installed. This AD requires initial and repetitive inspections of the 3rd-stage turbine wheels. This AD was prompted by a report that six 3rd-stage turbine wheels were returned to service after a repair that could result in exceedance of the allowable vibration threshold during operation. We are issuing this AD to address the unsafe condition on these products.