Specification for Aero and Aero-Derived Gas Turbine Engine Lubricants
AS5780
This specification defines basic physical, chemical, and performance limits for 5 cSt grades of gas turbine engine lubricating oils used in aero and aero-derived marine and industrial applications, along with standard test methods and requirements for laboratories performing them. It also defines the quality control requirements to assure batch conformance and materials traceability, and the procedures to manage and communicate changes in oil formulation and brand. This specification invokes the Performance Review Institute (PRI) product qualification process. Requests for submittal information may be made to the PRI at the address in Appendix D Section D.2, referencing this specification. Products qualified to this specification are listed on a Qualified Products List (QPL) managed by the PRI. Additional tests and evaluations may be required by individual equipment builders before an oil is approved for use in their equipment. Approval and/or certification for use of a specific gas turbine oil in aero and aero-derived marine and industrial applications is the responsibility of the individual equipment builders and/or governmental authorities and is not implied by compliance with or qualification to this specification.
Rationale: AS5780D is up for the standard 5-year review. There has been progress within the E-34 Propulsion Lubricants committee in creating new test methods that need incorporation within the standard and further developments in lubricant technology that impacts the standard. As part of the 5-year review, it is anticipated that a revision to the standard will reflect: new test methods (ARP) and test conditions, updates to all tables, rationalization and possible reduction of Appendix A2 and consideration for additional oil properties in Appendix A1 in response to Industry need.