NAVAIR PMA-275 intends to award a sole-source delivery order to Honeywell International Inc. for Environmental Control System components supporting V-22 Block B-to-Block C Mission Computer Obsolescence Initiative upgrades. The components include the ECS Controller, Environmental Control Unit, Cockpit Flow Control Valve, Nosebay Avionics Cooling Supply Fan Motor, and Nosebay Fan Bracket. The estimated period of performance is two years, with anticipated award in September 2027. Honeywell is the original equipment manufacturer and only source with the proprietary technical data, configuration knowledge, manufacturing capability, and supply-chain access needed for compatible V-22 ECS components. Although this is not a request for competitive proposals, responsible sources may submit capability information demonstrating compatibility and the ability to meet delivery and support requirements.