This SAE Aerospace Information Report (AIR) was prepared by a panel of the SAE A-5 Committee. This document establishes the specifications for fluids used in landing gear shock struts with extreme pressure and antiwear additives that have been added for improved lubrication.

This document requires qualified products.

Purpose:

The purpose of this document is to describe several hydraulic fluids with an additive package that can be used for the reduction of friction and subsequent reduction of "ladder cracking" in commercial aircraft shock struts.

Field of Application:

The requirements included herein are for a hydraulic fluid in commercial landing gear shock struts. The fluid contains a uniquely colored dye to differentiate it from other fluids used for hydraulic systems.