Service Letter No. 192 B
Spark Plug Fouling
Supersedes Service Letter No. L192A
January 19, 1988
To all Owners and Operators of Lycoming Aircraft Engines.
In many cases spark plug fouling resulting from the tetraethyl lead (TEL) in aviation fuels can be reduced or eliminated by proper operating techniques.
Get It Exchanged
Use our Engine Exchange Program to order a new, rebuilt, or overhauled engine to experience more airtime and less downtime.