Service Bulletin No. 608

Replacement of Hartzell Engine Technologies' Fuel Pump Assemblies


DATE: February 6, 2014


Table A in the attached Service Bulletin.


Next maintenance event not to exceed 50 hours or before further flight if fuel leak found during preflight inspection.

In response to field reports of leaking Hartzell Engine Technologies’ (HET’s) fuel pump, Lycoming Engines requires replacement of all fuel pumps identified in Tables A and B with a verified fuel pump of the same part number.

Find a Service Center

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

Supplement No. 1 to Service Bulletin No. 608

For more information on this subject, refer to Supplement No. 1 to Service Bulletin No. 608.