Sole source procurement for 13 units of an encoding altimeter (NSN 6610 012590251), with delivery FOB origin. The government intends to award to Elbit America Inc., the original equipment manufacturer and only known source due to lack of data rights. Other interested firms may express capability or submit a Source Approval Request, but the procurement will not be delayed for SAR approval. The acquisition will use FAR Part 13 procedures and is not set aside for small business. The solicitation will be posted electronically on NECO.