Corporate Subsidiaries

AIRCRAFT MODIFICATIONS	ENVIRONMENTAL MONITORING
Avcon Industries, Inc.	Butler National Services, Inc.
516 North Oliver	2772 NW 31st Ave.
Newton, KS 67114	Ft. Lauderdale, FL 33311
Phone: 316-284-2842	Phone: 954-733-7511
Fax: 316-284-2844	Fax: 954-733-2133

DEFENSE CONTRACTING & ELECTRONICS	CLASSIC AVIATION PRODUCTS
Butler National Corp-Tempe	Butler National Corporation
4654 S. Ash Ave.	19920 W. 161st Street
Tempe, AZ 85282	Olathe, KS 66062
Phone: 480-491-5551	Phone: 913-780-9595
Fax: 480-491-5352	Fax: 913-780-5088

AVIONICS	MANAGEMENT SERVICES
Butler National Corp-Tempe	Butler National Corporation
4654 S. Ash Ave.	19920 W. 161st Street
Tempe, AZ 85282	Olathe, KS 66062
Phone: 480-491-5551	Phone: 913-780-9595
Fax: 480-491-5352	Fax: 913-780-5088

ARCHITECTURE & ENGINEERING
BCS Design, Inc.
19920 W. 161st Street
Olathe, KS 66062
Phone: 913-780-4820
Fax: 913-780-5088