The US Army Aviation Turbine Engines Project Office (ATE PO), seeks information, performance capabilities, and technical data on Commercial Off-The-Shelf/Non-Developmental Item (COTS/NDI), commercial-modified, and military aviation turbine engines in support of a Future Long Range Assault Aircraft (FLRAA).  The FLRAA supports the Future Vertical Lift (FVL) Capability Set 3 missions.  Both existing and developing engine systems and component level data are sought, which describe candidate technologies of interest for FLRAA, their current capabilities, estimated costs, schedules, and risks.  This data will assist the US Government’s planning efforts to procure a solution for current and future Army Aviation applications.This RFI, issued in accordance with FAR 15.201(e), is issued for the purpose of preliminary planning for potential acquisition of an aviation turbine engine for the FLRAA platform and is not a Request for Proposal (RFP).  The US Government is requesting information to determine the Technology Readiness Level (TRL) and Manufacturing Readiness Level (MRL) of aviation turbine engines, components, and technologies capable of supporting FLRAA.  Additionally, the US Government is seeking information on the state of the art of engine technology to enhance air vehicle performance capabilities, as well as the availability of technical data to support requirements development, advanced concept studies, product support concept development, and long range planning purposes.