Concentrations	12 Months Ended
Sep. 30, 2024
Concentrations
Concentrations	2. Concentrations Major Customers In fiscal years 2024, 2023 and 2022, the Company derived 42%, 54% and 58%, respectively, of total sales from five customers, although not all the same customers in each year. Accounts receivable and contract assets related to those top five customers were $7.6 million, $3.5 million and $3.3 million as of fiscal years ended September 30, 2024, 2023 and 2022, respectively. Major Suppliers The Company buys several of its components from sole source suppliers. Although there are a limited number of suppliers of particular components, management believes other suppliers could provide similar components on comparable terms. During fiscal year 2024, the Company had four suppliers that accounted for 63.1% of the Company’s total inventory related purchases. During fiscal year 2023, the Company had four suppliers that accounted for 49.0% of the Company’s total inventory related purchases. During fiscal year 2022, the Company had three suppliers that accounted for 33.7% of the Company’s total inventory related purchases. Concentration of Credit Risk Financial instruments that potentially subject the Company to concentration of credit risk consist principally of cash balances and accounts receivable. The Company invests its excess cash where preservation of principal is the major consideration. Cash balances are maintained with two major banks. Balances on deposit with certain money market accounts and operating accounts may exceed the Federal Deposit Insurance Corporation limits. The Company’s customer base consists principally of companies within the aviation industry. The Company requests advance payments and/or letters of credit from customers that it considers to be significant credit risks.

Concentrations

12 Months Ended

Sep. 30, 2024

2. Concentrations

Major Customers

In fiscal years 2024, 2023 and 2022, the Company derived 42%, 54% and 58%, respectively, of total sales from five customers, although not all the same customers in each year. Accounts receivable and contract assets related to those top five customers were $7.6 million, $3.5 million and $3.3 million as of fiscal years ended September 30, 2024, 2023 and 2022, respectively.

Major Suppliers

The Company buys several of its components from sole source suppliers. Although there are a limited number of suppliers of particular components, management believes other suppliers could provide similar components on comparable terms.

During fiscal year 2024, the Company had four suppliers that accounted for 63.1% of the Company’s total inventory related purchases. During fiscal year 2023, the Company had four suppliers that accounted for 49.0% of the Company’s total inventory related purchases. During fiscal year 2022, the Company had three suppliers that accounted for 33.7% of the Company’s total inventory related purchases.

Concentration of Credit Risk

Financial instruments that potentially subject the Company to concentration of credit risk consist principally of cash balances and accounts receivable. The Company invests its excess cash where preservation of principal is the major consideration. Cash balances are maintained with two major banks. Balances on deposit with certain money market accounts and operating accounts may exceed the Federal Deposit Insurance Corporation limits. The Company’s customer base consists principally of companies within the aviation industry. The Company requests advance payments and/or letters of credit from customers that it considers to be significant credit risks.