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Lycoming Mandatory Service Bulletins

Posted by Chris McPherson on July 4, 2016

Lycoming just released Mandatory Service Bulletin No. 624 and 626.

Lycoming Mandatory Service Bulletin No. 624 is addressing some engine driven fuel pumps that were produced by Hartzell Engine Technologies. The affected pumps may have a defective cap screw. These units may be new or overhauled units. There are some warranty considerations given. This link will take you to the complete service bulletin. Lycoming MSB 624

Lycoming Mandatory Service Bulletin No. 626 is addressing AVStar flow divider (Fuel Manifold). See the service bulletin for specific part numbers. The affected units were manufactured between 01 Oct 2015 through 23 March 2016.  There are some warranty considerations given. This link will take you to the complete service bulletin. Lycoming MSB 626