Service Bulletin No. 604 

Compliance with Hartzell Engine Technologies, LLC Alert Service Bulletin No. 048 dated 11/16/2012, Turbocharger model TAO411, P/N 410188-0019 Turbine Wheel Replacement

  • Publications

DATE: November 21, 2012 


New, rebuilt, or overhauled  Lycoming  TIO­540­AK1A  engine  models in Table 1 Lycoming engine models field­overhauled or repaired with model TAO411, P/N 410188­019 turbocharger turbine wheel.


Before further flight.

This Service Bulletin is notification for mandatory compliance with HET’s Alert Service Bulletin No. 048 dated 11/16/2012, Turbocharger HET model TAO411, P/N 410188­0019 Turbine Wheel Replacement.

Product Support Network

Wherever you are in the world, you have access to exceptional expertise and knowledge about Lycoming engines. Get the most comprehensive customer service and support in the general aviation industry.

Find a Service Center

Every Lycoming Service Center offers exceptional customer service and unrivaled expertise.