Airworthiness Directives; MT-Propeller Entwicklung GmbH Propellers
airworthiness · Rule · Final rule; request for comments. · Published 2022-09-01 · Effective 2022-09-16 · 87 FR 53648
Document
Document number
2022-19050
Federal Register citation
87 FR 53648
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
MT-Propeller Entwicklung GmbH
Publication date
2022-09-01
Effective date
2022-09-16
FAA docket
Docket No. FAA-2022-1056
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain MT-Propeller Entwicklung GmbH MTV-5-1-( ), MTV-9-( ), MTV-11-( ), MTV-12-( ), MTV-14-B, MTV-14-D, MTV-15-( ), MTV-16-( ), MTV-17-( ), MTV-18-( ), MTV-20-( ), and MTV-27-( ) variable pitch propellers. This AD was prompted by reports of certain propeller blade lag screws that were manufactured with an improper surface finish, which results in reduced fatigue strength of these lag screws. This AD requires replacement of certain propeller blade lag screws with parts eligible for installation. The FAA is issuing this AD to address the unsafe condition on these products.