This is a five-year, firm-fixed-price requirements contract for the sole-source repair of avionic components for the TH-1H helicopter, intended for award to Chelton Avionics, Inc. in Prescott, AZ. The period of performance consists of a one-year base period and four one-year option periods. The work involves specific National Stock Numbers (NSNs) for items like intercommunication controls, audio controllers, and radio sets. A critical requirement is a 30-workday delivery for SURGE and MICAP priority orders, which take precedence over routine repairs. The contract includes provisions for "Over and Above" work, which requires government approval and funding before any such repairs can begin.