This requirement is for 50 each of a flight-critical part (NSN 7R-5831-015817896-E7, TDP VER 002), delivered FOB origin, and only Government-approved sources have been solicited. The part requires engineering source approval by the design control activity, and the approved source(s) retain essential data rights, manufacturing/repair knowledge, or technical data not economically available to the Government. An alternate source must qualify in accordance with the design control activity’s procedures, as approved by the cognizant Government engineering activity. If you are not an approved source, you must submit the information required by