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AD 2002-09-08, Amendment 39,12741

May 21, 2002

Summary:  This amendments supersedes an existing AD, that is applicable to Hartzell models ( )HC-( )( )Y-( ) ( ) ( ) compact series, constant speed or feathering propellers with Hartzell manufactured "Y" shank blades.  That AD currently requires initial and repetitive blade replacement and modification of pitch change mechanisms for certain propeller models; and changing the airplane operating limitations with specific models of propellers installed.  This amendment requires initial blade inspections, with no repetitive inspections; rework of all "Y" shank blades including cold rolling of the blade shank retention radius, blade replacement and modification of pitch change mechanisms for certain propeller models; and changing the airplane operating limitations with specific models of propellers installed.

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