SCHAUMBURG, Ill.--(BUSINESS WIRE)--Sparton Corporation (NYSE:SPA) and Ultra Electronics Holdings plc (ULE) announce the award of subcontracts valued at $87 million to their ERAPSCO joint venture, for the manufacture of sonobuoys for the United States Navy. The award is a GFY15 ERAPSCO Indefinite Delivery Indefinite Quantity (IDIQ) contract release for sonobuoy requirements under ERAPSCO’s five year contract. ERAPSCO will provide production subcontracts in the amount of $47 million and $40 milli