Commitments and Contingencies	6 Months Ended
Mar. 31, 2023
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	16. Commitments and Contingencies Engine Purchase and Sale Commitments On February 26, 2021, the Company and General Electric Company (“GE”), acting through its GE-Aviation business unit, entered into an Amended and Restated Letter Agreement No. 13-3. We agreed to purchase and take delivery of ten (10) new CF34-8C5 or CF34-8E5 engines with delivery dates starting from July 1, 2021 through November 1, 2022. The total purchase commitment related to these ten (10) engines is approximately $52.2 million. We also have options to purchase an additional ten (10) similar engines beyond 2022. As of December 31, 2022, we have received delivery of all ten (10) purchased engines pursuant to the Amended and Restated Letter Agreement No. 13-3. On December 27, 2022, the Company entered into an Engine Sale Agreement with United. The Engine Sale Agreement provides for the sale by the Company to United of 30 GE aircraft engines, with gross proceeds of approximately $80.0 million. The Company expects the net proceeds from this sale to be approximately $53.6 million. The closing of the sale of each engine is subject to certain customary closing deliverables, including delivery of bills of sale and delivery receipts, confirmation of engine location, termination of any existing liens, and other deliverables customary for transactions of this type. The sale of ten (10) of the engines closed in March 2023. The approximate net proceeds from the sale was $28.6 million after the retirement of $5.6 million of debt. An additional six (6) engines were sold in April 2023 for approximately $11 million which was used to reduce the debt balance. The sale of the remaining engines is expected to close in June 2023. Litigation We are subject to certain legal actions which we consider routine to our business activities. As of March 31, 2023, our management believed the ultimate outcomes of other routine legal matters are not likely to have a material adverse effect on our financial position, liquidity or results of operations. Electric Aircraft Forward Purchase Commitments As described in Note 7, in February 2021, we entered into a forward purchase contract with Archer for a number of eVTOL aircraft. The aggregate base commitment for the eVTOL aircraft is $200.0 million, with an option to purchase additional aircraft. Our obligation to purchase the eVTOL aircraft is subject to the Company and Archer first agreeing in the future to a number of terms and conditions, which may or may not be met. As described in Note 7, in July 2021, we entered into a forward purchase contract with Heart for a number of fully electric aircraft. The maximum aggregate base commitment for the aircraft is $1,200.0 million, with an option to purchase additional aircraft. Our obligation to purchase the aircraft is subject to the Company and Heart first agreeing in the future to a number of terms and conditions, which may or may not be met. Other Commitments We have certain contracts for goods and services that require us to pay a penalty, acquire inventory specific to us or purchase contract-specific equipment, as defined by each respective contract, if we terminate the contract without cause prior to its expiration date. Because these obligations are contingent on our termination of the contract without cause prior to its expiration date, no obligation would exist unless such a termination occurs.

Commitments and Contingencies

6 Months Ended

Mar. 31, 2023

Commitments And Contingencies Disclosure [Abstract]

16.

Commitments and Contingencies

Engine Purchase and Sale Commitments

On February 26, 2021, the Company and General Electric Company (“GE”), acting through its GE-Aviation business unit, entered into an Amended and Restated Letter Agreement No. 13-3. We agreed to purchase and take delivery of ten (10) new CF34-8C5 or CF34-8E5 engines with delivery dates starting from July 1, 2021 through November 1, 2022. The total purchase commitment related to these ten (10) engines is approximately $52.2 million. We also have options to purchase an additional ten (10) similar engines beyond 2022. As of December 31, 2022, we have received delivery of all ten (10) purchased engines pursuant to the Amended and Restated Letter Agreement No. 13-3.

On December 27, 2022, the Company entered into an Engine Sale Agreement with United. The Engine Sale Agreement provides for the sale by the Company to United of 30 GE aircraft engines, with gross proceeds of approximately $80.0 million. The Company expects the net proceeds from this sale to be approximately $53.6 million. The closing of the sale of each engine is subject to certain customary closing deliverables, including delivery of bills of sale and delivery receipts, confirmation of engine location, termination of any existing liens, and other deliverables customary for transactions of this type. The sale of ten (10) of the engines closed in March 2023. The approximate net proceeds from the sale was $28.6 million after the retirement of $5.6 million of debt. An additional six (6) engines were sold in April 2023 for approximately $11 million which was used to reduce the debt balance. The sale of the remaining engines is expected to close in June 2023.

Litigation

We are subject to certain legal actions which we consider routine to our business activities. As of March 31, 2023, our management believed the ultimate outcomes of other routine legal matters are not likely to have a material adverse effect on our financial position, liquidity or results of operations.

Electric Aircraft Forward Purchase Commitments

As described in Note 7, in February 2021, we entered into a forward purchase contract with Archer for a number of eVTOL aircraft. The aggregate base commitment for the eVTOL aircraft is $200.0 million, with an option to purchase additional aircraft. Our obligation to purchase the eVTOL aircraft is subject to the Company and Archer first agreeing in the future to a number of terms and conditions, which may or may not be met.

As described in Note 7, in July 2021, we entered into a forward purchase contract with Heart for a number of fully electric aircraft. The maximum aggregate base commitment for the aircraft is $1,200.0 million, with an option to purchase additional aircraft. Our obligation to purchase the aircraft is subject to the Company and Heart first agreeing in the future to a number of terms and conditions, which may or may not be met.

Other Commitments

We have certain contracts for goods and services that require us to pay a penalty, acquire inventory specific to us or purchase contract-specific equipment, as defined by each respective contract, if we terminate the contract without cause prior to its expiration date. Because these obligations are contingent on our termination of the contract without cause prior to its expiration date, no obligation would exist unless such a termination occurs.