December 31,

September 30,

2022

2022

Expendable parts and supplies, net:

Expendable parts and supplies

$

32,013

$

31,913

Less: obsolescence and other

(6,504

)

(5,198

)

$

25,509

$

26,715

Prepaid expenses and other current assets:

Prepaid aviation insurance

$

1,026

$

2,618

Prepaid vendors

906

1,310

Prepaid other insurance

798

1,268

Lease incentives

143

352

Prepaid fuel and other

1,080

1,068

$

3,953

$

6,616

Property and equipment, net:

Aircraft and other flight equipment

$

1,354,137

$

1,260,143

Other equipment

5,709

5,577

Leasehold improvements

2,776

2,776

Vehicles

1,003

992

Building

777

777

Furniture and fixtures

298

298

Total property and equipment

1,364,700

1,270,563

Less: accumulated depreciation

(419,155

)

(405,309

)

$

945,545

$

865,254

Other assets:

Investments in equity securities

$

13,408

$

15,178

Lease incentives

1,061

1,097

Other

515

15

$

14,984

$

16,290

Other accrued expenses:

Accrued property taxes

$

6,066

$

5,866

Accrued interest

5,016

2,882

Accrued vacation

7,768

4,746

Accrued lodging

3,529

3,795

Accrued maintenance

2,154

1,453

Accrued liability on government payroll program

—

2,967

Accrued simulator costs

149

1,045

Accrued employee benefits

1,097

1,679

Accrued fleet operating expense

1,232

1,606

Other

3,550

2,961

$

30,561

$

29,000

Other noncurrent liabilities:

Warrant liabilities

$

25,225

$

25,225

Lease incentive obligations

1,050

1,050

Long-term employee benefits

843

1,123

Other

1,820

1,821

$

28,938

$

29,219