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Thu, May 21, 2009

AD: Hartzell

AD NUMBER: 2009-10-14

MANUFACTURER: Hartzell Propeller Inc. Steel Hub Turbine Propellers
SUBJECT: Airworthiness Directive 2009-10-14

 

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for Hartzell Propeller Inc. steel hub turbine propellers, with any counterweight slug attachment bolts, part number (P/N) B-3386-14H, LFC manufacturing lot 224, installed. This AD requires identifying and removing all counterweight slug attachment bolts, P/N B-3386-14H, LFC manufacturing lot 224, from service and installing serviceable bolts. This AD results from two reports of failure of the bolts that attach the propeller blade counterweight slug, and separation of the counterweight slug which led to propeller vibration and damage to the propeller spinner. We are issuing this AD to prevent separation of the propeller blade counterweight slug, which could lead to injury and damage to the airplane.
 

FMI: http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/AA42DAE2659BD4F7862575BC0053487A?OpenDocument

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