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Commitments and contingencies (Tables) | 6 Months Ended
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Jun. 30, 2020
Commitments and Contingencies Disclosure [Abstract] |
Schedule of movements in prepayments on flight equipment | Movements in prepayments on flight equipment during the six months ended June 30, 2020 and 2019 were as follows:
| Six Months Ended June 30, |  |
| 2020 |  | 2019
Prepayments on flight equipment at beginning of period | $ | 2,954,478 |  |  | $ | 3,024,520 |
Prepayments during the period | 685,051 |  |  | 522,887 |
Interest paid and capitalized during the period | 31,830 |  |  | 53,905 |
Prepayments and capitalized interest applied to the purchase of flight equipment | (301,263) |  |  | (639,945) |
Prepayments on flight equipment at end of period | $ | 3,370,096 |  |  | $ | 2,961,367 |

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