December 31,

September 30,

2024

Expendable parts and supplies, net:

Expendable parts and supplies

$

39,404

$

39,089

Less: expendable parts warranty

(5,574

)

(6,079

)

Less: obsolescence

(4,658

)

(4,738

)

$

29,172

$

28,272

Property and equipment, net:

Aircraft and other flight equipment

$

319,831

$

591,421

Other equipment

9,788

9,503

Total property and equipment

329,619

600,924

Less: accumulated depreciation

(126,052

)

(174,573

)

$

203,567

$

426,351

Other assets:

Investments in equity securities

$

300

$

300

Lease incentives

—

812

Contract asset

5,400

6,081

Other

1,129

516

$

6,829

$

7,709

Other accrued expenses:

Accrued property taxes

$

4,722

$

4,650

Accrued interest

3,207

2,997

Accrued vacation

7,308

7,421

Accrued lodging

3,847

4,433

Accrued maintenance

1,911

2,493

Accrued employee benefits

1,528

1,075

Accrued fleet operating expense

3,118

2,751

Other

9,178

6,488

$

34,819

$

32,308

Other noncurrent liabilities:

Warrant liabilities

$

25,225

$

25,225

Lease incentive obligations

—

1,050

Long-term employee benefits

537

485

Other

913

1,819

$

26,675

$

28,579