Service Bulletin No. 637
Reprint of Slick/Champion Aerospace Service Bulletin SB1-19
March 14, 2019
All 4 and 6-cylinder Lycoming engines equipped with Slick 4300 or 6300 Series Impulse Coupled Magnetos.
TIME OF COMPLIANCE
Next maintenance event, or 400 hours total time in service of the magneto (whichever occurs first), then every 500 hours after the initial inspection.
This Service Bulletin is notification of required action for mandatory compliance with Slick/Champion Aerospace Service Bulletin No. SB1-19 dated 02/08/2019, regarding Lycoming engine models with Slick
4300 or 6300 Series Impulse Coupled Magnetos (Serial Numbers between 16010001 thru 18050664 identified in Slick/Champion Aerospace Service Bulletin SB1-19) approved for use on Lycoming engines.
These magnetos were manufactured between January 2016 and May 2018.
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