This is a procurement for 48 units of a flight-critical part that requires government source approval prior to contract award. Only sources previously approved by the government for this specific item have been solicited. The notice emphasizes that the time required to approve a new source is typically too long to delay an award, so unapproved sources must submit a complete source approval package with their proposal to be considered. The delivery terms are FOB Origin. No specific budget or location for performance is detailed in the provided description.