Service Instruction No. 1457 A 

February 1, 2012 

MODELS AFFECTED

All 320, 360, 390, 540, 580, IO­720 Direct Drive Series Engines with Two  Individual Magnetos All 235  Engines with the  Accessory Housing Machined  for Oil Cooler  Installation 

TIME OF COMPLIANCE

At owner’s discretion 

This Service Instruction identifies remote­mounted  oil filter  kits for installation on specified Lycoming  engines.

Optional Remote­Mounted Oil Filter Kits
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https://www.lycoming.com/sites/default/files/Optional%20Remote-Mounted%20Oil%20Filter%20Kits.pdf