The requirement covers 35 units of a flight-critical item requiring government source approval; only previously approved sources are solicited, and new sources must submit detailed qualification data via NAVSUP WSS brochures, but award cannot be delayed for approval. Delivery is FOB origin, and the government is not using FAR Part 12 commercial item procedures. Interested parties may identify commercial item interest within 15 days of this notice. No budget amount or performance location is specified.