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v3.22.4

Summary of Significant Accounting Policies (Details) | 3 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2022 USD ($) segment | Dec. 31, 2021 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($)
Number of business segments |  |  |  |
Number of business segments in which the entity operates | segment | 1 |  |  |
Long-Lived Assets |  |  |  |
Impairment charges | $ 0 | $ 0 |  |
Contract Balances |  |  |  |
Balance at beginning of the period (Contract Assets) | 162,742 |  |  |
Balance at beginning of the period (Contract Liabilities) | 259,183 |  |  |
Amount transferred to receivables from contract assets | 0 |  |  |
Contract asset additions | 0 |  |  |
Performance obligations satisfied during the period that were included in the contract liability balance at the beginning of the period (Contract Liabilities) | (202,794) |  |  |
Increases due to invoicing prior to satisfaction of performance obligations (Contract Liabilities) | 35,390 |  |  |
Balance at end of the period (Contract Assets) | 162,742 |  |  |
Balance at end of the period (Contract Liabilities) | 91,779 |  |  |
Customer Service Revenue |  |  |  |
Customer Service Cost of Sales | 2,792,452 | 2,728,057 |  |
Gross profit | $ 3,723,804 | 3,967,721 |  |
Engineering Development |  |  |  |
Percentage of employees who were engineers engaged in various engineering development projects | 21.00% |  |  |
Warranty |  |  |  |
Standard Product Warranty Accrual, Length of Warranty Period | 24 months |  |  |
Self-Insurance Reserves |  |  |  |
Estimated liability for medical claims incurred but not reported | $ 48,146 |  | $ 51,590 |
Excess of funded premiums over estimated claims incurred but not reported | 505,776 |  | 424,155 |
Restricted Cash |  |  |  |
Cash and cash equivalents | 19,443,231 |  | 17,250,546 |
Total cash and cash equivalents and restricted cash | 19,443,231 | 9,705,993 | $ 17,250,546 | $ 8,265,606
Customer Service |  |  |  |
Customer Service Revenue |  |  |  |
Customer Service Sales | 1,061,149 | 1,085,445 |  |
Customer Service Cost of Sales | 319,102 | 343,650 |  |
Gross profit | $ 742,047 | $ 741,795 |  |
Property Plant and Equipment Other than Air Transportation Equipment and Manufacturing Facility | Minimum |  |  |  |
Number of business segments |  |  |  |
Estimated useful lives | 3 years |  |  |
Property Plant and Equipment Other than Air Transportation Equipment and Manufacturing Facility | Maximum |  |  |  |
Number of business segments |  |  |  |
Estimated useful lives | 7 years |  |  |
Manufacturing Facility |  |  |  |
Number of business segments |  |  |  |
Estimated useful lives | 39 years |  |  |
Corporate airplanes |  |  |  |
Number of business segments |  |  |  |
Estimated useful lives | 10 years |  |  |

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