Service Bulletin No. 398 B

Recommended Corrective Action for Use of Incorrect Fuel

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November 22, 2010 


All Lycoming aircraft engines


Preventive and Corrective Action for Engines Operated with Incorrect Fuel 

This Service Bulletin gives guidance when a  Lycoming  engine  has been operated  with incorrect  fuel. Engine malfunction and damage could occur because of the use of incorrect fuels.

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