Business Segments:

12 Months Ended

Sep. 30, 2011

Business Segments:

Business Segments:

17. Business Segments:

        The Company operates in one principal business segment which designs, manufactures and sells flat panel displays, flight information computers, and advanced monitoring systems to the DoD, DOI, government agencies, commercial air transport carriers and corporate/general aviation markets. The Company currently derives virtually all of its revenues from the sale of this equipment. Most of the Company's sales, operating results and identifiable assets are in the United States. During fiscal 2011, 2010 and 2009 IS&S derived 79%, 68% and 75%, respectively, of its total revenues from the sale of FPDS. During fiscal 2011, 2010 and 2009 the Company derived 21%, 32% and 25%, respectively, of total revenues from the sale of air data systems related products.

• Geographic Data

        Most of the Company's sales, operating results and identifiable assets are in the United States. In fiscal year 2011, 2010 and 2009 net sales outside the United States amounted to $4.0 million, $2.8 million and $4.4 million, respectively.

• Product Data

        The Company's current product line includes FPDS and air data systems and components, During fiscal 2011, 2010 and 2009, the Company derived 79%, 68% and 75%, respectively, of its revenue from sales of FPDS. The remaining revenue for each of the fiscal years was from sales of air data systems and components.