This is a procurement for 46 units of a flight-critical part that requires government source approval prior to contract award. The Government intends to solicit and negotiate with only the previously approved source(s) under the authority of FAR 6.302-1. While this is a notice of intent and not a formal competitive request, proposals from other sources will be considered if received within 45 days of the synopsis publication. Unapproved sources must submit a detailed source approval request with their proposal, following specific NAVSUP WSS procedures. The time required for new source approval is typically too lengthy to delay an award.