This is a non-competitive, sole-source procurement for three flight-critical parts, intended only for previously approved sources. The Government intends to negotiate with only one source, and while other sources may submit capability statements, the time required for a new source approval normally precludes delaying an award. The item requires Government source approval prior to contract award, and unapproved sources must submit detailed source approval information with their proposal. There is no budget or specific performance location mentioned in the description.