Service Bulletin No. 623

Reprint of Hartzell Engine Technologies

  • Publications

February 3, 2016


All Lycoming engines equipped with Alternator Part Number LW-14326 or LW-14338.


50 hours from the issue date of this Service Bulletin or the next regularly scheduled maintenance event (whichever occurs first.)

This Service Bulletin is notification of required action for mandatory compliance with Hartzell Engine Technologies Service Bulletin SB-062 dated July 13, 2015, regarding Lycoming engine models (Table 1) with alternator part number LW-14326 or LW-14338 approved for use on Lycoming engines.



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.