airworthiness · Rule · Final rule. · Published 2020-07-02 · Effective 2020-08-06 · 85 FR 39829
Document
Document number
2020-14259
Federal Register citation
85 FR 39829
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Pratt & Whitney Canada Corp. Turboprop
Publication date
2020-07-02
Effective date
2020-08-06
FAA docket
Docket No. FAA-2019-0395
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Pratt & Whitney Canada Corp. (P&WC) PW150A model turboprop engines. This AD was prompted by a determination by the manufacturer that certain PW150A engine high-pressure (HP) centrifugal impellers may exhibit a material microstructure anomaly that has a potential to adversely affect the low cycle fatigue characteristics of the part. This AD requires replacement of the affected HP centrifugal impellers. The FAA is issuing this AD to address the unsafe condition on these products.