September 30,

2023

2022

Expendable parts and supplies, net:

Expendable parts and supplies

$

39,630

$

31,913

Less: expendable parts warranty

(6,295

)

(1,373

)

Less: obsolescence

(4,090

)

(3,825

)

$

29,245

$

26,715

Prepaid expenses and other current assets:

Prepaid aviation insurance

$

3,176

$

2,618

Prepaid vendors

143

1,310

Prepaid other insurance

1,205

1,268

Lease incentives

1,125

352

Prepaid fuel and other

1,645

1,068

$

7,294

$

6,616

Property and equipment, net:

Aircraft and other flight equipment

$

1,039,782

$

1,260,143

Other equipment

9,421

10,420

Total property and equipment

1,049,203

1,270,563

Less: accumulated depreciation

(351,181

)

(405,309

)

$

698,022

$

865,254

Other assets:

Investments in equity securities

$

20,320

$

15,178

Lease incentives

954

1,097

Contract asset

8,756

—

Other

516

15

$

30,546

$

16,290

Other accrued expenses:

Accrued property taxes

$

5,281

$

5,866

Accrued interest

3,447

2,882

Accrued vacation

6,763

4,746

Accrued lodging

3,984

3,795

Accrued maintenance

2,117

1,453

Accrued liability on government payroll
    program

—

2,967

Accrued simulator costs

1,006

1,045

Accrued employee benefits

1,450

1,679

Accrued fleet operating expense

650

1,606

Short term lease incentive liability

97

97

Other

2,206

2,864

$

27,001

$

29,000

Other noncurrent liabilities:

Warrant liabilities

$

25,225

$

25,225

Lease incentive obligations

1,050

1,050

Long-term employee benefits

429

1,123

Other

1,818

1,821

$

28,522

$

29,219