10. Concentration Risk Disclosure	12 Months Ended
Oct. 31, 2019
Notes
10. Concentration Risk Disclosure	10. Major Customers The Company’s principal business is to provide predictive analytics and decision support technology for the aviation industry to primarily improve the operational performance and cash flow of airlines. The Company believes it operates in one operating segment. The Company performs ongoing credit evaluations of its customers and generally does not require collateral. Three customers accounted for 55%, or $8,296,000, of total revenues in fiscal year 2019. One customer accounted for 24% or $3,599,000, a second customer accounted for 20% or $2,985,000, and a third customer accounted for 11% or $1,713,000 of total revenues in fiscal year 2019. Three customers accounted for 53%, or $7,798,000, of total revenues in fiscal year 2018. One customer accounted for 23% or $3,344,000, a second customer accounted for 20% or $2,995,000, and a third customer accounted for 10% or $1,459,000 of total revenues in fiscal year 2018. As of October 31, 2019, the Company had three customers each of which accounted for 10% or more of the accounts receivable balance. One customer accounted for 19%, or $224,000, a second customer accounted for 14%, or $173,000, and a third customer accounted for 13% or $158,000. As of October 31, 2018, the Company had two customers each of which accounted for 10% or more of the accounts receivable balance. One customer accounted for 33%, or $446,000, and a second customer accounted for 21%, or $278,000. Credit losses historically have been immaterial, although, there is one customer, which is not one of the major customers described above, with a significant past due accounts receivable balance, which the Company has fully reserved as of the fiscal year ended October 31, 2019. The Company had foreign sales of $1,226,000 and $978,000 in fiscal years 2019 and 2018, respectively. All sales, including foreign sales, are denominated in U.S. dollars.

10. Concentration Risk Disclosure

12 Months Ended

Oct. 31, 2019

10. Major Customers

The Company’s principal business is to provide predictive analytics and decision support technology for the aviation industry to primarily improve the operational performance and cash flow of airlines. The Company believes it operates in one operating segment. The Company performs ongoing credit evaluations of its customers and generally does not require collateral. Three customers accounted for 55%, or $8,296,000, of total revenues in fiscal year 2019. One customer accounted for 24% or $3,599,000, a second customer accounted for 20% or $2,985,000, and a third customer accounted for 11% or $1,713,000 of total revenues in fiscal year 2019. Three customers accounted for 53%, or $7,798,000, of total revenues in fiscal year 2018. One customer accounted for 23% or $3,344,000, a second customer accounted for 20% or $2,995,000, and a third customer accounted for 10% or $1,459,000 of total revenues in fiscal year 2018.

As of October 31, 2019, the Company had three customers each of which accounted for 10% or more of the accounts receivable balance. One customer accounted for 19%, or $224,000, a second customer accounted for 14%, or $173,000, and a third customer accounted for 13% or $158,000. As of October 31, 2018, the Company had two customers each of which accounted for 10% or more of the accounts receivable balance. One customer accounted for 33%, or $446,000, and a second customer accounted for 21%, or $278,000. Credit losses historically have been immaterial, although, there is one customer, which is not one of the major customers described above, with a significant past due accounts receivable balance, which the Company has fully reserved as of the fiscal year ended October 31, 2019.

The Company had foreign sales of $1,226,000 and $978,000 in fiscal years 2019 and 2018, respectively. All sales, including foreign sales, are denominated in U.S. dollars.