Service Bulletin No. 595

Torque Values for Screws that Attach Ignition Harness Attachment Plate

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DATE: May 6, 2011


All Lycoming engines with S-20 and S-200 series TCM magnetos.


Within 50 hours of engine operation or at the next maintenance event, whichever occurs first.

This Service Bulletin applies to the torque values for the four screws that are used to attach the ignition harness attachment plate for S-20 and S-200 series TCM magnetos on Lycoming engines.

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