The requirement is for 68 EA of part reference 2746330-1, delivered FOB origin. This part requires engineering source approval by the design control activity to maintain quality. The approved source(s) hold unique design capability, engineering skills, manufacturing/repair knowledge, and data rights or technical data that are not economically available to the Government and are essential to maintaining part quality. Consequently, the part must be acquired or repaired from an approved source. Alternate sources must qualify under the design control activity’s procedures as approved by the cognizant Government engineering activity.