Airworthiness Directives; Textron Lycoming Reciprocating Engines IO-540 and O-540 Engines Equipped With Slick Aircraft Products Magnetos
airworthiness · Rule · Final rule; request for comments. · Published 1999-02-10 · Effective 1999-02-25 · 64 FR 6516
Document
Document number
99-3039
Federal Register citation
64 FR 6516
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Textron Lycoming Reciprocating
Publication date
1999-02-10
Effective date
1999-02-25
FAA docket
Docket No. 98-ANE-81-AD
Abstract
This amendment adopts a new airworthiness directive (AD) that is applicable to Textron Lycoming IO-540 and O-540 engines equipped with Slick Aircraft Products magnetos. This action requires removal of the Slick magneto from the engine and inspection of the impulse coupling pawl for wear. This amendment is prompted by several service difficulty reports, two incidents, and an accident involving severely worn and failed impulse couplings. The actions specified in this AD are intended to prevent failure of the magneto impulse coupling, resulting in seizure of the engine.