Fri, Jun 27, 2003
AD NUMBER: 97-18-02R1
MANUFACTURER: Hartzell
SUBJECT: Airworthiness Directive 97-18-02 R1
SUMMARY: This amendment revises an existing
airworthiness directive (AD), that is applicable to Hartzell
Propeller Inc. ( )HC-()(2,3)(X,V)( )-( ) series
and HA-A2V20-1B series propellers with aluminum
blades. That AD currently requires initial and repetitive dye
penetrant and eddy current inspections of the blade and an optical
comparator inspection of the blade retention area, and, if
necessary, replacement with serviceable parts. In addition, that AD
currently requires initial and repetitive visual and magnetic
particle inspection of the blade clamp, dye penetrant inspection of
the blade internal bearing bore, and, if necessary, replacement
with serviceable parts. Also, for all
HC-(1,4,5,8)(2,3)(X,V)( )-( ) steel hub
propellers, that AD currently requires an additional initial and
repetitive visual and magnetic particle inspection of the hub, and,
if necessary, replacement with serviceable parts. This amendment
revises that AD by permitting the replacement of affected
propellers with Hartzell Propeller Inc. model "MV" series
propellers as an optional terminating action for the initial and
repetitive inspections of that AD. This amendment is prompted by
type certification approval of the Hartzell "MV" series propellers
that are direct replacements for the affected propellers, and
service bulletin approval to allow modification of affected
propellers to the"MV" type design configuration. The actions
specified by this AD are intended to prevent blade separation due
to cracked blades, hubs, or blade clamps, which can result in loss
of control of the airplane.
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