5. Maintenance and Other Inventory: Schedule of Maintenance and Other Inventory (Details) - USD ($) |
May 31, 2026 |
May 31, 2025 |
|---|---|---|
| Details | ||
| Maintenance and other inventory, Gross | $ 1,865,680 | $ 1,872,931 |
| Maintenance and other inventory, allowance for obsolescence | 659,684 | 765,056 |
| Maintenance and other inventory, Net | $ 1,205,996 | $ 1,107,875 |