Federal Aviation Administration, 800 Independence Avenue, S.W., Washington, D.C., 20591

17 -- PRODUCT IMPROVEMENTS TO THE WILCOX ELECTRIC, INC., MARK 20 INSTRUMENT LANDING SYSTEM POC Sandra Harrelson, Contracting Officer, 202/267-3669 The FAA intends to contract with Wilcox Electric, Inc., Kansas City MO, on a sole source basis under the authority of 49 U.S.C. 40110(b)(2)(E) for product improvements to the Wilcox Mark 20 category II/III instrument landing system. Work will include modification of the Mark 20 ILS to accommodate improvements in maintenance, communications, installation and interface functions and modifications to allow operation under various site restrictions, including development of a narrow beamwidth localizer antenna and interfaces with multiple existing antenna configurations such as logarithmic periodic dipole localizer antenna arrays, null reference, sideband reference and endfire glideslope antennas. Interfaces will include hardware and software changes. Work will also include upgrading of associated engineering and provisioning documentation and procurement of parts peculiar associated with changes. Modifications will be incorporated in Mark 20 systems concurrent with the on-going production run. A technical data package is not available. No solicitation document is available. See numbered Note 22.?? (0114)

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