This is an unrestricted solicitation for the repair of six Indicator, AS ALT-NVIS units, with the potential for the quantity to increase to ten units within 365 days after award. The contract will be awarded on a sole source basis to Aviation Avionics & Instrument Corp, though all responsible sources may submit a quotation. No drawings, specifications, or schematics are available from the agency. The applicable North American Industry Classification Standard Code is 488190, with a small business size standard of $40,000,000. The location for performance of services is not specified.