The Naval Air Systems Command (NAVAIR) intends to award a single source Indefinite-Delivery/Indefinite-Quantity (IDIQ) contract utilizing full and open competition procedures for the engine overhaul and repair services for the forty- three (43) CFM56-7B24 engines, in support of the C-40A. Amendment 0004 of this formal Request for Proposal (RFP) posting (N00019-23-RFPREQ-APM-207-0106) of 10 October 2024, provides updated Solicitation Amendment 0004, updated Attachment L-2 Vol 3 CE Gap Analysis, and updated Attachment L-3 Vol 4 PP Contract Data. Proposals must be submitted in accordance with all solicitation requirements no later than 4:30PM EST on 6 January 2025. Proposals received after this deadline will be excluded from consideration. THIS ANNOUNCEMENT IS NOT TO BE CONSTRUED AS A COMMITMENT BY THE GOVERNMENT, NOR WILL THE GOVERNMENT PAY FOR ANY INFORMATION SOLICITED OR PROVIDED.