Airworthiness Directives; Hartzell Propeller Inc. Model HC-E4A-3( )/E10950( ) Propellers
airworthiness · Rule · Final rule; request for comments. · Published 2007-04-12 · Effective 2007-04-27 · 72 FR 18375
Document
Document number
E7-6586
Federal Register citation
72 FR 18375
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Hartzell
Publication date
2007-04-12
Effective date
2007-04-27
FAA docket
Docket No. FAA-2007-27552
Abstract
The FAA is adopting a new airworthiness directive (AD) for Hartzell Propeller Inc. model HC-E4A-3( )/E10950( ) propellers. This AD requires initial and repetitive inspections and rework of the propeller blade retention radius, and replacement of the propeller blade thrust bearing, for each blade. This AD results from reports of excessive propeller vibration and of damaged or broken propeller blade thrust bearings found during routine and investigative propeller disassembly. We are issuing this AD to prevent propeller blade separation, damage to the airplane, and possible loss of airplane control.