Service Letter No. 258

August 27, 2013 

To all Lycoming Engine Owners, Operators, and Authorized Lycoming  Distributors

This Service Letter is to advise customers, operators and authorized Lycoming distributors that External  Retaining  Ring P/N  MS16624­37 is superseded by P/N MS16624­2037 External Retaining Ring  (zinc coated).

Part Number Supersedure for External Retaining Ring
CTA Heading: 
Find a Service Center
CTA Description: 
Every Lycoming Service Center can help keep your engine up to date with all Service Letters.
Background Color: 
Find a Service Centerdistributors?title=&combine=&field_location_type_tid=3
https://www.lycoming.com/sites/default/files/SL258_SL_L258_Part_Number_Supersedure_External_Retaining_Ring_08272013.pdf