Superseded. This AD was superseded by AD 2013-20-18. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2009-05-09
Effective 03/31/2009 · Published 03/16/2009
Airworthiness Directives; Bell Helicopter Textron Inc. Model 412, 412CF, and 412EP Helicopters
Summary
This amendment adopts a new airworthiness directive (AD) for the specified Bell Helicopter Textron Inc. (Bell) model helicopters. This action requires reidentifying a certain part-numbered main rotor yoke (yoke) based on whether it was ever installed on a Model 412CF helicopter or on a Model 412 or 412EP helicopter with a slope landing kit. This AD also requires reducing the retirement life of the reidentified yokes…