Airworthiness Directives; Lycoming Engines Model IO-720-A1B Reciprocating Engines
airworthiness · Rule · Final rule; request for comments. · Published 2011-09-14 · Effective 2011-09-29 · 76 FR 56637
Document
Document number
2011-22244
Federal Register citation
76 FR 56637
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Lycoming
Publication date
2011-09-14
Effective date
2011-09-29
FAA docket
Docket No. FAA-2011-0604
Abstract
We are adopting a new airworthiness directive (AD) for certain model IO-720-A1B Lycoming Engines reciprocating engines. This AD requires a crankshaft inspection for certain parts that may be installed. This AD was prompted by the failure of a crankshaft due to incorrect parts installed. We are issuing this AD to prevent engine crankshaft failure and damage to the airplane.