SLICK SB1-15A: 4-Cylinder Magneto Distributor Gear Assemblies, Potential Decreased Service Life

Potential decreased service life of Slick 4-cylinder magneto distributor gear assemblies. Based on process and component improvements following the initial release of this service bulletin, the serial number range is being extended in this revision. Magnetos previously returned for compliance to SB1-15 must be returned or inspected for compliance to this revision SB1-15A.