EXHIBIT 21.1 LIST OF SUBSIDIARIES OF REGISTRANT SUBSIDIARIES OF DECRANE AIRCRAFT HOLDINGS, INC. AEROSPACE DISPLAY SYSTEMS, INC., a Delaware corporation. AUDIO INTERNATIONAL, INC., an Arkansas corporation. AUDIO INTERNATIONAL SALES, INC., a U. S. Virgin Islands corporation. AVTECH CORPORATION, a Washington corporation. CORY COMPONENTS, INC., a California corporation. CWP ACQUISITION, INC., a Delaware corporation. DETTMERS INDUSTRIES, INC., a Delaware corporation. ELSINORE AEROSPACE SERVICES, INC., a California corporation. ELSINORE ENGINEERING, INC., a Delaware corporation. FLIGHT REFUELING, INC., a Maryland corporation. HOLLINGSEAD INTERNATIONAL, INC., a California corporation. HOLLINGSEAD INTERNATIONAL, LTD., a UK company. PATRICK AIRCRAFT TANK SYSTEMS, INC., a Maryland corporation. PATS, INC., a Maryland corporation. PATS AIRCRAFT AND ENGINEERING CORPORATION, a Maryland corporation. PATS SUPPORT, INC., a Maryland corporation. PPI HOLDINGS, INC., a Kansas corporation. PRECISION PATTERN, INC., a Kansas corporation. TRI-STAR ELECTRONICS EUROPE S.A., a Swiss company. TRI-STAR ELECTRONICS INTERNATIONAL, INC., a California corporation. TRI-STAR TECHNOLOGIES, a California general partnership.