LIST OF SUBSIDIARIES OF REGISTRANT EXHIBIT 21.1 SUBSIDIARIES OF DECRANE AIRCRAFT HOLDINGS, INC. AEROSPACE DISPLAY SYSTEMS, LLC, a Delaware limited liability company. AUDIO INTERNATIONAL, INC., an Arkansas corporation. AVTECH CORPORATION, a Washington corporation. CARL F. BOOTH & CO., LLC, a Delaware limited liability company. COLTECH, INC., a Texas corporation. CORY COMPONENTS, INC., a California corporation. CUSTOM WOODWORK & PLASTICS, LLC, a Delaware limited liability company. DAH-IP HOLDINGS, INC., a Delaware corporation. DAH-IP INFINITY, INC., a Delaware corporation. DECRANE AIRCRAFT FURNITURE CO., LP, a Texas limited partnership. DECRANE AIRCRAFT INTERNATIONAL SALES, INC., a Barbados corporation. DETTMERS INDUSTRIES, INC., a Delaware corporation. ELSINORE AEROSPACE SERVICES, INC., a California corporation. ELSINORE ENGINEERING, INC., a Delaware corporation. ERDA, INC., a Wisconsin Corporation. FLIGHT REFUELING, INC., a Maryland corporation. HOLLINGSEAD INTERNATIONAL, INC., a California corporation. HOLLINGSEAD INTERNATIONAL, LTD., a UK company. INTERNATIONAL CUSTOM INTERIORS, INC., a Florida corporation. PATRICK AIRCRAFT TANK SYSTEMS, INC., a Maryland corporation. PATS AIRCRAFT AND ENGINEERING CORPORATION, a Maryland corporation. PATS SUPPORT, INC., a Maryland corporation. PATS, INC., a Maryland corporation. PCI NEWCO, INC., a Delaware Corporation. PPI HOLDINGS, INC., a Kansas corporation. PRECISION PATTERN, INC., a Kansas corporation. THE INFINITY PARTNERS, LTD., a Texas limited partnership. TRI-STAR ELECTRONICS EUROPE S.A., a Swiss company. TRI-STAR ELECTRONICS INTERNATIONAL, INC., a California corporation. TRI-STAR TECHNOLOGIES, a California general partnership.