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The recommended practice establishes the requirements for lubricating oil filters for general aviation reciprocating engine applications with lubricating oil systems normally operating in a pressure range of 345 - 689 kPa (50 - 100 psig).

This Aerospace Information Report (AIR) will examine considerations relative to the use of mechanical switches on aircraft landing gear, and present "lessons learned" during the period that these devices have been used.

This document defines the criteria used for the selection of landing gear shock strut upper and lower bearings.

This document defines the criteria used for the selection of landing gear shock strut upper and lower bearings (see Figure 1).

This specification covers definition of landing impact tests which are to be conducted on landing gear assemblies including shock absorbers, suggested instrumentation for the tests and required data of the resulting test report. It is intended to standardize impact test procedures on landing gear shock absorbers and to provide sufficient data to allow evaluation of the design with respect to requirements of MIL-L-8552 and MIL-S-8959 as applicable.

This ARP applies to all types and models of civil aircraft for landing gear structure and mechanism excepting wheels, tires and brakes. All axles, wheel forks, axle beams, links, arms, mechanical and air-oil energy absorbers, braces, lock assemblies, trunnion beams, etc., that sustain loads originating at the ground and that are not integral parts of the airframe structure shall be in accordance with this practice.

This document describes fluids used in landing gear shock struts with extreme pressure and antiwear additives that have been added for improved lubrication.

This document describes hydraulic fluids used in landing gear shock struts with extreme high contact pressure and anti-wear additives that have been added for improved lubrication.