Biggest changeWe also hold a 25% interest in the Advanced Engine Repair JV which focuses on developing new cost savings programs for engine repairs. 40 The following table presents our results of operations: Year Ended December 31, Change (in thousands) 2022 2021 2020 '22 vs '21 '21 vs '20 Aerospace products revenue $ 153,550 $ 23,301 $ — $ 130,249 $ 23,301 Expenses Cost of sales 88,895 14,308 — 74,587 14,308 Operating expenses 11,967 5,429 — 6,538 5,429 Acquisition and transaction expenses 243 — — 243 — Depreciation and amortization 258 66 — 192 66 Total expenses 101,363 19,803 — 81,560 19,803 Other income (expense) Equity in losses of unconsolidated entities (1,109) (1,403) — 294 (1,403) Gain on sale of assets, net 18,562 19,917 — (1,355) 19,917 Total other income 17,453 18,514 — (1,061) 18,514 Income before income taxes 69,640 22,012 — 47,628 22,012 Provision for income taxes 2,961 1,135 — 1,826 1,135 Net income 66,679 20,877 — 45,802 20,877 Less: Net loss attributable to non-controlling interest in consolidated subsidiaries — — — — — Net income attributable to shareholders $ 66,679 $ 20,877 $ — $ 45,802 $ 20,877 The following table sets forth a reconciliation of net income attributable to shareholders to Adjusted EBITDA: Year Ended December 31, Change (in thousands) 2022 2021 2020 '22 vs '21 '21 vs '20 Net income attributable to shareholders $ 66,679 $ 20,877 $ — $ 45,802 $ 20,877 Add: Provision for income taxes 2,961 1,135 — 1,826 1,135 Add: Equity-based compensation expense — — — — — Add: Acquisition and transaction expenses 243 — — 243 — Add: Losses on the modification or extinguishment of debt and capital lease obligations — — — — — Add: Changes in fair value of non-hedge derivative instruments — — — — — Add: Asset impairment charges — — — — — Add: Incentive allocations — — — — — Add: Depreciation and amortization expense 258 66 — 192 66 Add: Interest expense and dividends on preferred shares — — — — — Add: Pro-rata share of Adjusted EBITDA from unconsolidated entities (1) (885) (1,203) — 318 (1,203) Less: Equity in losses of unconsolidated entities 1,109 1,403 — (294) 1,403 Less: Non-controlling share of Adjusted EBITDA — — — — — Adjusted EBITDA (non-GAAP) $ 70,365 $ 22,278 $ — $ 48,087 $ 22,278 __________________________________________________ (1) Includes the following items for the years ended December 31, 2022, 2021 and 2020: (i) net loss of $(1,109), $(1,403) and $0 and (ii) depreciation and amortization of $224, $200 and $0, respectively. 41 Comparison of the years ended December 31, 2022 and 2021 Revenues Total Aerospace Products revenue increased $130.2 million primarily driven by an increase in sales relating to the CFM56-7B and CFM56-5B engines, engine modules, spare parts and used material inventory as operations continued to ramp-up in 2022.
Biggest changeThe following table presents our results of operations: Year Ended December 31, Change (in thousands) 2023 2022 2021 '23 vs '22 '22 vs '21 Aerospace products revenue $ 454,970 $ 178,515 $ 23,301 $ 276,455 $ 155,214 Expenses Cost of sales 280,280 109,481 14,308 170,799 95,173 Operating expenses 20,459 11,967 5,429 8,492 6,538 Acquisition and transaction expenses 1,722 243 — 1,479 243 Depreciation and amortization 661 258 66 403 192 Total expenses 303,122 121,949 19,803 181,173 102,146 Other income (expense) Equity in losses of unconsolidated entities (1,458) (1,109) (1,403) (349) 294 Gain on sale of assets, net — 18,163 20,384 (18,163) (2,221) Other income 5,347 — — 5,347 — Total other income 3,889 17,054 18,981 (13,165) (1,927) Income before income taxes 155,737 73,620 22,479 82,117 51,141 (Benefit from) provision for income taxes (24,440) 2,961 1,135 (27,401) 1,826 Net income 180,177 70,659 21,344 109,518 49,315 Less: Net loss attributable to non-controlling interest in consolidated subsidiaries — — — — — Net income attributable to shareholders $ 180,177 $ 70,659 $ 21,344 $ 109,518 $ 49,315 41 The following table sets forth a reconciliation of net income attributable to shareholders to Adjusted EBITDA: Year Ended December 31, Change (in thousands) 2023 2022 2021 '23 vs '22 '22 vs '21 Net income attributable to shareholders $ 180,177 $ 70,659 $ 21,344 $ 109,518 $ 49,315 Add: (Benefit from) provision for income taxes (24,440) 2,961 1,135 (27,401) 1,826 Add: Equity-based compensation expense 225 — — 225 — Add: Acquisition and transaction expenses 1,722 243 — 1,479 243 Add: Losses on the modification or extinguishment of debt and capital lease obligations — — — — — Add: Changes in fair value of non-hedge derivative instruments — — — — — Add: Asset impairment charges — — — — — Add: Incentive allocations — — — — — Add: Depreciation and amortization expense 661 258 66 403 192 Add: Interest expense and dividends on preferred shares — — — — — Add: Pro-rata share of Adjusted EBITDA from unconsolidated entities (1) 206 (885) (1,203) 1,091 318 Less: Equity in losses of unconsolidated entities 1,458 1,109 1,403 349 (294) Less: Non-controlling share of Adjusted EBITDA — — — — — Adjusted EBITDA (non-GAAP) $ 160,009 $ 74,345 $ 22,745 $ 85,664 $ 51,600 __________________________________________________ (1) Includes the following items for the years ended December 31, 2023, 2022 and 2021: (i) net loss of $ 1,458 , $1,109 and $1,403 (ii) depreciation and amortization of $1,236 , $224 and $200 and (iii) acquisition and transaction expense of $428, $0, $0, respectively.
Our principal uses of liquidity have been and continue to be (i) acquisitions of aircraft and engines, (ii) dividends to our ordinary and preferred shareholders, (iii) expenses associated with our operating activities, and (iv) debt service obligations associated with our investments. • Cash used for the purpose of making investments was $831.5 million, $1.5 billion and $597.5 million during the years ended December 31, 2022, 2021, and 2020, respectively. • Distributions to shareholders, including cash dividends, were $155.6 million, $142.8 million and $131.4 million during the years ended December 31, 2022, 2021 and 2020, respectively. • Uses of liquidity associated with our operating expenses are captured on a net basis in our cash flows from operating activities.
Our principal uses of liquidity have been and continue to be (i) acquisitions of aircraft and engines, (ii) dividends to our ordinary and preferred shareholders, (iii) expenses associated with our operating activities, and (iv) debt service obligations associated with our investments. • Cash used for the purpose of making investments was $861.5 million, $831.5 million and $1.5 billion during the years ended December 31, 2023, 2022, and 2021, respectively. • Distributions to shareholders, including cash dividends, were $151.6 million, $155.6 million and $142.8 million during the years ended December 31, 2023, 2022 and 2021, respectively. • Uses of liquidity associated with our operating expenses are captured on a net basis in our cash flows from operating activities.
Historical Cash Flow The following table presents our historical cash flow from both continuing and discontinued operations: Year Ended December 31, (in thousands) 2022 2021 2020 Cash flow data: Net cash (used in) provided by operating activities $ (20,657) $ (22,044) $ 63,106 Net cash used in investing activities (411,253) (1,286,958) (509,123) Net cash provided by financing activities 44,914 1,587,645 364,918 Comparison of the years ended December 31, 2022 and 2021 Net cash used in operating activities decreased $1.4 million, which primarily reflects certain adjustments to reconcile net loss to cash used in operating activities including increases in (i) asset impairment of $126.8 million, (ii) provision for credit losses of $35.0 million, (iii) equity in losses of unconsolidated entities of $34.2 million and (iv) loss on extinguishment of debt of $16.6 million partially offset by (v) an increase in gain on sale of assets of $92.6 million, (vi) an increase in our net loss of $81.3 million, and (vii) a decrease in net working capital of $35.3 million.
Historical Cash Flow The following table presents our historical cash flow from both continuing and discontinued operations: Year Ended December 31, (in thousands) 2023 2022 2021 Cash flow data: Net cash used in operating activities $ 128,982 $ (20,657) $ (22,044) Net cash used in investing activities (373,349) (411,253) (1,286,958) Net cash provided by financing activities 282,208 44,914 1,587,645 Comparison of the years ended December 31, 2023 and 2022 Net cash used in operating activities decreased $149.6 million, which primarily reflects (i) a decrease in our Net loss of $455.8 million and (ii) Changes in working capital of $52.8 million, partially offset by certain adjustments to reconcile net income to cash used in operating activities including decreases in (i) Asset impairment of $135.1 million, (ii) Equity in losses of unconsolidated entities of $45.4 million, (iii) Provision for credit losses of $41.4 million, (iv) Depreciation and amortization of $23.4 million, (v) Loss on extinguishment of debt of $19.9 million, and (vi) an increase in gain on sale of assets of $19.1 million.
Adjusted EBITDA (Non-GAAP) Adjusted EBITDA increased $22.3 million primarily due to the changes noted above. 42 Corporate and Other The following table presents our results of operations: Year Ended December 31, Change (in thousands) 2022 2021 2020 '22 vs '21 '21 vs '20 Revenues Lease income $ 20,246 $ 10,131 $ 11,145 $ 10,115 $ (1,014) Other revenue 6,702 4,030 5,578 2,672 (1,548) Total revenues 26,948 14,161 16,723 12,787 (2,562) Expenses Operating expenses 39,065 21,429 19,454 17,636 1,975 General and administrative 14,164 13,448 14,106 716 (658) Acquisition and transaction expenses 11,041 16,929 3,181 (5,888) 13,748 Management fees and incentive allocation to affiliate 3,562 684 5,446 2,878 (4,762) Depreciation and amortization 8,401 7,996 7,382 405 614 Interest expense 169,194 155,017 87,442 14,177 67,575 Total expenses 245,427 215,503 137,011 29,924 78,492 Other (expense) income Loss on extinguishment of debt (19,859) (3,254) (6,943) (16,605) 3,689 Other (expense) income (39) 37 — (76) 37 Total other expense (19,898) (3,217) (6,943) (16,681) 3,726 Loss before income taxes (238,377) (204,559) (127,231) (33,818) (77,328) (Benefit from) provision for income taxes (163) (82) 469 (81) (551) Net loss (238,214) (204,477) (127,700) (33,737) (76,777) Less: Net loss attributable to non-controlling interest in consolidated subsidiaries — — — — — Less: Dividends on preferred shares 27,164 24,758 17,869 2,406 6,889 Net loss attributable to shareholders from continuing operations $ (265,378) $ (229,235) $ (145,569) $ (36,143) $ (83,666) 43 The following table sets forth a reconciliation of net loss attributable to shareholders to Adjusted EBITDA: Year Ended December 31, Change (in thousands) 2022 2021 2020 '22 vs '21 '21 vs '20 Net loss attributable to shareholders from continuing operations $ (265,378) $ (229,235) $ (145,569) $ (36,143) $ (83,666) Add: (Benefit from) provision for income taxes (163) (82) 469 (81) (551) Add: Equity-based compensation expense — — — — — Add: Acquisition and transaction expenses 11,041 16,929 3,181 (5,888) 13,748 Add: Losses on the modification or extinguishment of debt and capital lease obligations 19,859 3,254 6,943 16,605 (3,689) Add: Changes in fair value of non-hedge derivative instruments — — — — — Add: Asset impairment charges — — — — — Add: Incentive allocations 3,489 — — 3,489 — Add: Depreciation and amortization expense 8,401 7,996 7,382 405 614 Add: Interest expense and dividends on preferred shares 196,358 179,775 105,311 16,583 74,464 Add: Pro-rata share of Adjusted EBITDA from unconsolidated entities — — — — — Less: Equity in (earnings) losses of unconsolidated entities — — — — — Less: Non-controlling share of Adjusted EBITDA — — — — — Adjusted EBITDA (non-GAAP) $ (26,393) $ (21,363) $ (22,283) $ (5,030) $ 920 Comparison of the years ended December 31, 2022 and 2021 Revenues Total revenues increased $12.8 million primarily due to an increase in the Offshore Energy business as two of our vessels were on-hire longer in 2022 compared to 2021.
Corporate and Other The following table presents our results of operations: Year Ended December 31, Change (in thousands) 2023 2022 2021 '23 vs '22 '22 vs '21 Revenues Lease income $ 28,232 $ 20,246 $ 10,131 $ 7,986 $ 10,115 Other revenue 6,083 6,702 4,030 (619) 2,672 Total revenues 34,315 26,948 14,161 7,367 12,787 Expenses Operating expenses 51,828 39,065 21,429 12,763 17,636 General and administrative 13,700 14,164 13,448 (464) 716 Acquisition and transaction expenses 6,322 11,041 16,929 (4,719) (5,888) Management fees and incentive allocation to affiliate 18,037 3,562 684 14,475 2,878 Depreciation and amortization 10,862 8,401 7,996 2,461 405 Interest expense 161,639 169,194 155,017 (7,555) 14,177 Total expenses 262,388 245,427 215,503 16,961 29,924 Other income (expense) Loss on extinguishment of debt — (19,859) (3,254) 19,859 (16,605) Other income (expense) 943 (39) 37 982 (76) Total other income (expense) 943 (19,898) (3,217) 20,841 (16,681) Loss before income taxes (227,130) (238,377) (204,559) 11,247 (33,818) Provision for (benefit from) income taxes 833 (163) (82) 996 (81) Net loss (227,963) (238,214) (204,477) 10,251 (33,737) Less: Net loss attributable to non-controlling interest in consolidated subsidiaries — — — — — Less: Dividends on preferred shares 31,795 27,164 24,758 4,631 2,406 Net loss attributable to shareholders from continuing operations $ (259,758) $ (265,378) $ (229,235) $ 5,620 $ (36,143) 43 The following table sets forth a reconciliation of net loss attributable to shareholders to Adjusted EBITDA: Year Ended December 31, Change (in thousands) 2023 2022 2021 '23 vs '22 '22 vs '21 Net loss attributable to shareholders from continuing operations $ (259,758) $ (265,378) $ (229,235) $ 5,620 $ (36,143) Add: Provision for (benefit from) income taxes 833 (163) (82) 996 (81) Add: Equity-based compensation expense 1,076 — — 1,076 — Add: Acquisition and transaction expenses 6,322 11,041 16,929 (4,719) (5,888) Add: Losses on the modification or extinguishment of debt and capital lease obligations — 19,859 3,254 (19,859) 16,605 Add: Changes in fair value of non-hedge derivative instruments — — — — — Add: Asset impairment charges — — — — — Add: Incentive allocations 17,116 3,489 — 13,627 3,489 Add: Depreciation and amortization expense 10,862 8,401 7,996 2,461 405 Add: Interest expense and dividends on preferred shares 193,434 196,358 179,775 (2,924) 16,583 Add: Pro-rata share of Adjusted EBITDA from unconsolidated entities — — — — — Less: Equity in (earnings) losses of unconsolidated entities — — — — — Less: Non-controlling share of Adjusted EBITDA — — — — — Adjusted EBITDA (non-GAAP) $ (30,115) $ (26,393) $ (21,363) $ (3,722) $ (5,030) Comparison of the years ended December 31, 2023 and 2022 Revenues Total revenues increased $7.4 million primarily due to an increase in the Offshore Energy business, as one of our vessels was on-hire longer in 2023 compared to 2022, and at higher rates.
Adjusted EBITDA is defined as net income (loss) attributable to shareholders from continuing operations, adjusted (a) to exclude the impact of provision for (benefit from) income taxes, equity-based compensation expense, acquisition and transaction expenses, losses on the modification or extinguishment of debt and capital lease obligations, changes in fair value of non-hedge derivative instruments, asset impairment charges, incentive allocations, depreciation and amortization expense, dividends on preferred shares and interest expense, (b) to include the impact of our pro-rata share of Adjusted EBITDA from unconsolidated entities and (c) to exclude the impact of equity in earnings (losses) of unconsolidated entities and the non-controlling share of Adjusted EBITDA. 32 The following table presents our consolidated results of operations: Year Ended December 31, Change (in thousands) 2022 2021 2020 '22 vs '21 '21 vs '20 Revenues Lease income $ 178,874 $ 172,117 $ 177,476 $ 6,757 $ (5,359) Maintenance revenue 148,846 128,819 101,462 20,027 27,357 Finance lease income 440 1,747 2,260 (1,307) (513) Asset sales revenue 208,500 — — 208,500 — Aerospace products revenue 153,550 23,301 — 130,249 23,301 Other revenue 18,201 9,599 16,736 8,602 (7,137) Total revenues 708,411 335,583 297,934 372,828 37,649 Expenses Cost of sales 248,385 14,308 — 234,077 14,308 Operating expenses 132,264 59,615 40,121 72,649 19,494 General and administrative 14,164 13,448 14,106 716 (658) Acquisition and transaction expenses 13,207 17,911 9,868 (4,704) 8,043 Management fees and incentive allocation to affiliate 3,562 684 5,446 2,878 (4,762) Depreciation and amortization 152,917 147,740 141,286 5,177 6,454 Asset impairment 137,219 10,463 33,978 126,756 (23,515) Interest expense 169,194 155,017 87,442 14,177 67,575 Total expenses 870,912 419,186 332,247 451,726 86,939 Other income (expense) Equity in losses of unconsolidated entities (369) (1,403) (1,932) 1,034 529 Gain (loss) on sale of assets, net 77,211 49,015 (300) 28,196 49,315 Loss on extinguishment of debt (19,859) (3,254) (6,943) (16,605) 3,689 Other income (expense) 207 (490) 94 697 (584) Total other income (expense) 57,190 43,868 (9,081) 13,322 52,949 Loss from continuing operations before income taxes (105,311) (39,735) (43,394) (65,576) 3,659 Provision for (benefit from) income taxes 5,300 3,126 (4,343) 2,174 7,469 Net loss from continuing operations (110,611) (42,861) (39,051) (67,750) (3,810) Net loss from discontinued operations, net of income taxes (101,416) (87,845) (64,641) (13,571) (23,204) Net loss (212,027) (130,706) (103,692) (81,321) (27,014) Less: Net loss attributable to non-controlling interest in consolidated subsidiaries: Continuing operations — — — — — Discontinued operations (18,817) (26,472) (16,522) 7,655 (9,950) Less: Dividends on preferred shares 27,164 24,758 17,869 2,406 6,889 Net loss attributable to shareholders $ (220,374) $ (128,992) $ (105,039) $ (91,382) $ (23,953) 33 The following table sets forth a reconciliation of net loss attributable to shareholders from continuing operations to Adjusted EBITDA: Year Ended December 31, Change (in thousands) 2022 2021 2020 '22 vs '21 '21 vs '20 Net loss attributable to shareholders from continuing operations $ (137,775) $ (67,619) $ (56,920) $ (70,156) $ (10,699) Add: Provision for (benefit from) income taxes 5,300 3,126 (4,343) 2,174 7,469 Add: Equity-based compensation expense — — — — — Add: Acquisition and transaction expenses 13,207 17,911 9,868 (4,704) 8,043 Add: Losses on the modification or extinguishment of debt and capital lease obligations 19,859 3,254 6,943 16,605 (3,689) Add: Changes in fair value of non-hedge derivative instruments — — — — — Add: Asset impairment charges 137,219 10,463 33,978 126,756 (23,515) Add: Incentive allocations 3,489 — — 3,489 — Add: Depreciation & amortization expense (1) 190,031 175,718 171,632 14,313 4,086 Add: Interest expense and dividends on preferred shares 196,358 179,775 105,311 16,583 74,464 Add: Pro-rata share of Adjusted EBITDA from unconsolidated entities (2) 40 (1,203) (1,932) 1,243 729 Less: Equity in losses of unconsolidated entities 369 1,403 1,932 (1,034) (529) Less: Non-controlling share of Adjusted EBITDA — — — — — Adjusted EBITDA (non-GAAP) $ 428,097 $ 322,828 $ 266,469 $ 105,269 $ 56,359 __________________________________________________ (1) Includes the following items for the years ended December 31, 2022, 2021 and 2020: (i) depreciation and amortization expense of $152,917, $147,740 and $141,286, (ii) lease intangible amortization of $13,913, $4,993 and $3,747 and (iii) amortization for lease incentives of $23,201, $22,985 and $26,599, respectively.
Adjusted EBITDA is defined as net income (loss) attributable to shareholders from continuing operations, adjusted (a) to exclude the impact of provision for (benefit from) income taxes, equity-based compensation expense, acquisition and transaction expenses, losses on the modification or extinguishment of debt and capital lease obligations, changes in fair value of non-hedge derivative instruments, asset impairment charges, incentive allocations, depreciation and amortization expense, dividends on preferred shares and interest expense, (b) to include the impact of our pro-rata share of Adjusted EBITDA from unconsolidated entities and (c) to exclude the impact of equity in earnings (losses) of unconsolidated entities and the non-controlling share of Adjusted EBITDA. 32 The following table presents our consolidated results of operations: Year Ended December 31, Change (in thousands) 2023 2022 2021 '23 vs '22 '22 vs '21 Revenues Lease income $ 207,936 $ 179,314 $ 173,864 $ 28,622 $ 5,450 Maintenance revenue 191,347 148,846 128,819 42,501 20,027 Asset sales revenue 303,141 183,535 — 119,606 183,535 Aerospace products revenue 454,970 178,515 23,301 276,455 155,214 Other revenue 13,502 18,201 9,599 (4,699) 8,602 Total revenues 1,170,896 708,411 335,583 462,485 372,828 Expenses Cost of sales 502,132 248,385 14,308 253,747 234,077 Operating expenses 110,163 132,264 59,615 (22,101) 72,649 General and administrative 13,700 14,164 13,448 (464) 716 Acquisition and transaction expenses 15,194 13,207 17,911 1,987 (4,704) Management fees and incentive allocation to affiliate 18,037 3,562 684 14,475 2,878 Depreciation and amortization 169,877 152,917 147,740 16,960 5,177 Asset impairment 2,121 137,219 10,463 (135,098) 126,756 Interest expense 161,639 169,194 155,017 (7,555) 14,177 Total expenses 992,863 870,912 419,186 121,951 451,726 Other income (expense) Equity in losses of unconsolidated entities (1,606) (369) (1,403) (1,237) 1,034 Gain on sale of assets, net — 77,211 49,015 (77,211) 28,196 Loss on extinguishment of debt — (19,859) (3,254) 19,859 (16,605) Other income (expense) 7,590 207 (490) 7,383 697 Total other income 5,984 57,190 43,868 (51,206) 13,322 Income (loss) from continuing operations before income taxes 184,017 (105,311) (39,735) 289,328 (65,576) (Benefit from) provision for income taxes (59,800) 5,300 3,126 (65,100) 2,174 Net income (loss) from continuing operations 243,817 (110,611) (42,861) 354,428 (67,750) Net loss from discontinued operations, net of income taxes — (101,416) (87,845) 101,416 (13,571) Net income (loss) 243,817 (212,027) (130,706) 455,844 (81,321) Less: Net income (loss) attributable to non-controlling interest in consolidated subsidiaries: Continuing operations — — — — — Discontinued operations — (18,817) (26,472) 18,817 7,655 Less: Dividends on preferred shares 31,795 27,164 24,758 4,631 2,406 Net income (loss) attributable to shareholders $ 212,022 $ (220,374) $ (128,992) $ 432,396 $ (91,382) 33 The following table sets forth a reconciliation of net income (loss) attributable to shareholders from continuing operations to Adjusted EBITDA: Year Ended December 31, Change (in thousands) 2023 2022 2021 '23 vs '22 '22 vs '21 Net income (loss) attributable to shareholders from continuing operations $ 212,022 $ (137,775) $ (67,619) $ 349,797 $ (70,156) Add: (Benefit from) provision for income taxes (59,800) 5,300 3,126 (65,100) 2,174 Add: Equity-based compensation expense 1,638 — — 1,638 — Add: Acquisition and transaction expenses 15,194 13,207 17,911 1,987 (4,704) Add: Losses on the modification or extinguishment of debt and capital lease obligations — 19,859 3,254 (19,859) 16,605 Add: Changes in fair value of non-hedge derivative instruments — — — — — Add: Asset impairment charges 2,121 137,219 10,463 (135,098) 126,756 Add: Incentive allocations 17,116 3,489 — 13,627 3,489 Add: Depreciation & amortization expense (1) 213,641 190,031 175,718 23,610 14,313 Add: Interest expense and dividends on preferred shares 193,434 196,358 179,775 (2,924) 16,583 Add: Pro-rata share of Adjusted EBITDA from unconsolidated entities (2) 310 40 (1,203) 270 1,243 Less: Equity in losses of unconsolidated entities 1,606 369 1,403 1,237 (1,034) Less: Non-controlling share of Adjusted EBITDA — — — — — Adjusted EBITDA (non-GAAP) $ 597,282 $ 428,097 $ 322,828 $ 169,185 $ 105,269 __________________________________________________ (1) Includes the following items for the years ended December 31, 2023, 2022 and 2021: (i) depreciation and amortization expense of $169,877, $152,917 and $147,740, (ii) lease intangible amortization of $15,126, $13,913 and $4,993 and (iii) amortization for lease incentives of $28,638, $23,201 and $22,985, respectively.
The table below provides additional information on the assets in our Aviation Leasing segment: Aviation Assets Widebody Narrowbody Total Aircraft Assets at January 1, 2022 13 95 108 Purchases 1 38 39 Sales (3) (5) (8) Transfers (3) (30) (33) Assets at December 31, 2022 8 98 106 Engines Assets at January 1, 2022 68 139 207 Purchases 2 62 64 Sales (36) (35) (71) Transfers 6 18 24 Assets at December 31, 2022 40 184 224 37 The following table presents our results of operations for our Aviation Leasing segment: Year Ended December 31, Change (in thousands) 2022 2021 2020 '22 vs '21 '21 vs '20 Revenues Lease income $ 158,628 $ 161,986 $ 166,331 $ (3,358) $ (4,345) Maintenance revenue 148,846 128,819 101,462 20,027 27,357 Finance lease income 440 1,747 2,260 (1,307) (513) Asset sales revenue 208,500 — — 208,500 — Other revenue 11,499 5,569 11,158 5,930 (5,589) Total revenues 527,913 298,121 281,211 229,792 16,910 Expenses Cost of sales 159,490 — — 159,490 — Operating expenses 81,232 32,757 20,667 48,475 12,090 Acquisition and transaction expenses 1,923 982 6,687 941 (5,705) Depreciation and amortization 144,258 139,678 133,904 4,580 5,774 Asset impairment 137,219 10,463 33,978 126,756 (23,515) Total expenses 524,122 183,880 195,236 340,242 (11,356) Other income (expense) Equity in earnings (losses) of unconsolidated entities 740 — (1,932) 740 1,932 Gain (loss) on sale of assets, net 58,649 29,098 (300) 29,551 29,398 Other income (expense) 246 (527) 94 773 (621) Total other income (expense) 59,635 28,571 (2,138) 31,064 30,709 Income before income taxes 63,426 142,812 83,837 (79,386) 58,975 Provision for (benefit from) income taxes 2,502 2,073 (4,812) 429 6,885 Net income 60,924 140,739 88,649 (79,815) 52,090 Less: Net loss attributable to non-controlling interest in consolidated subsidiaries — — — — — Net income attributable to shareholders $ 60,924 $ 140,739 $ 88,649 $ (79,815) $ 52,090 38 The following table sets forth a reconciliation of net income attributable to shareholders to Adjusted EBITDA: Year Ended December 31, Change (in thousands) 2022 2021 2020 '22 vs '21 '21 vs '20 Net income attributable to shareholders $ 60,924 $ 140,739 $ 88,649 $ (79,815) $ 52,090 Add: Provision for (benefit from) income taxes 2,502 2,073 (4,812) 429 6,885 Add: Equity-based compensation expense — — — — — Add: Acquisition and transaction expenses 1,923 982 6,687 941 (5,705) Add: Losses on the modification or extinguishment of debt and capital lease obligations — — — — — Add: Changes in fair value of non-hedge derivative instruments — — — — — Add: Asset impairment charges 137,219 10,463 33,978 126,756 (23,515) Add: Incentive allocations — — — — — Add: Depreciation and amortization expense (1) 181,372 167,656 164,250 13,716 3,406 Add: Interest expense and dividends on preferred shares — — — — — Add: Pro-rata share of Adjusted EBITDA from unconsolidated entities (2) 925 — (1,932) 925 1,932 Less: Equity in (earnings) losses of unconsolidated entities (740) — 1,932 (740) (1,932) Less: Non-controlling share of Adjusted EBITDA — — — — — Adjusted EBITDA (non-GAAP) $ 384,125 $ 321,913 $ 288,752 $ 62,212 $ 33,161 __________________________________________________ (1) Includes the following items for the years ended December 31, 2022, 2021 and 2020: (i) depreciation expense of $144,258, $139,678 and $133,904, (ii) lease intangible amortization of $13,913, $4,993 and $3,747 and (iii) amortization for lease incentives of $23,201, $22,985 and $26,599, respectively.
The table below provides additional information on the assets in our Aviation Leasing segment: Aviation Assets Widebody Narrowbody Total Aircraft Assets at January 1, 2023 8 98 106 Purchases — 40 40 Sales (2) (11) (13) Transfers (1) (36) (37) Assets at December 31, 2023 5 91 96 Engines Assets at January 1, 2023 40 184 224 Purchases 7 94 101 Sales (17) (24) (41) Transfers 2 (19) (17) Assets at December 31, 2023 32 235 267 37 The following table presents our results of operations for our Aviation Leasing segment: Year Ended December 31, Change (in thousands) 2023 2022 2021 '23 vs '22 '22 vs '21 Revenues Lease income $ 179,704 $ 159,068 $ 163,733 $ 20,636 $ (4,665) Maintenance revenue 191,347 148,846 128,819 42,501 20,027 Asset sales revenue 303,141 183,535 — 119,606 183,535 Other revenue 7,419 11,499 5,569 (4,080) 5,930 Total revenues 681,611 502,948 298,121 178,663 204,827 Expenses Cost of sales 221,852 138,904 — 82,948 138,904 Operating expenses 37,876 81,232 32,757 (43,356) 48,475 Acquisition and transaction expenses 7,150 1,923 982 5,227 941 Depreciation and amortization 158,354 144,258 139,678 14,096 4,580 Asset impairment 2,121 137,219 10,463 (135,098) 126,756 Total expenses 427,353 503,536 183,880 (76,183) 319,656 Other income (expense) Equity in (losses) earnings of unconsolidated entities (148) 740 — (888) 740 Gain on sale of assets, net — 59,048 28,631 (59,048) 30,417 Other income (expense) 1,300 246 (527) 1,054 773 Total other income 1,152 60,034 28,104 (58,882) 31,930 Income before income taxes 255,410 59,446 142,345 195,964 (82,899) (Benefit from) provision for income taxes (36,193) 2,502 2,073 (38,695) 429 Net income 291,603 56,944 140,272 234,659 (83,328) Less: Net loss attributable to non-controlling interest in consolidated subsidiaries — — — — — Net income attributable to shareholders $ 291,603 $ 56,944 $ 140,272 $ 234,659 $ (83,328) 38 The following table sets forth a reconciliation of net income attributable to shareholders to Adjusted EBITDA: Year Ended December 31, Change (in thousands) 2023 2022 2021 '23 vs '22 '22 vs '21 Net income attributable to shareholders $ 291,603 $ 56,944 $ 140,272 $ 234,659 $ (83,328) Add: (Benefit from) provision for income taxes (36,193) 2,502 2,073 (38,695) 429 Add: Equity-based compensation expense 337 — — 337 — Add: Acquisition and transaction expenses 7,150 1,923 982 5,227 941 Add: Losses on the modification or extinguishment of debt and capital lease obligations — — — — — Add: Changes in fair value of non-hedge derivative instruments — — — — — Add: Asset impairment charges 2,121 137,219 10,463 (135,098) 126,756 Add: Incentive allocations — — — — — Add: Depreciation and amortization expense (1) 202,118 181,372 167,656 20,746 13,716 Add: Interest expense and dividends on preferred shares — — — — — Add: Pro-rata share of Adjusted EBITDA from unconsolidated entities (2) 104 925 — (821) 925 Less: Equity in losses (earnings) of unconsolidated entities 148 (740) — 888 (740) Less: Non-controlling share of Adjusted EBITDA — — — — — Adjusted EBITDA (non-GAAP) $ 467,388 $ 380,145 $ 321,446 $ 87,243 $ 58,699 __________________________________________________ (1) Includes the following items for the years ended December 31, 2023, 2022 and 2021: (i) depreciation expense of $158,354, $144,258 and $139,678, (ii) lease intangible amortization of $15,126, $13,913 and $4,993 and (iii) amortization for lease incentives of $28,638, $23,201 and $22,985, respectively.