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Debt Obligations (Tables)
 12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
Schedule of Notes Payable
Debt obligations consisted of the following:

As of December 31,
20242023
(in thousands)
Credit facility at a floating rate of interest of one-month term Secured Overnight Financing Rate (“SOFR”) plus 2.60% at December 31, 2024, secured by engines, airframes, and loan assets. The facility has a committed amount of $1.0 billion at December 31, 2024, which revolves until the maturity date of October 2029.
$693,000 $353,000 
WEST VII Series A 2023 term notes payable at a fixed rate of interest of 8.00%, maturing in October 2048, secured by engines, airframes, and loan assets
356,355 406,894 
WEST VI Series A 2021 term notes payable at a fixed rate of interest of 3.10%, maturing in May 2046, secured by engines, airframes, and loan assets
241,065 252,986 
WEST VI Series B 2021 term notes payable at a fixed rate of interest of 5.44%, maturing in May 2046, secured by engines, airframes, and loan assets
33,486 35,142 
WEST VI Series C 2021 term notes payable at a fixed rate of interest of 7.39%, maturing in May 2046, secured by engines, airframes, and loan assets
9,926 12,361 
WEST V Series A 2020 term notes payable at a fixed rate of interest of 3.23%, maturing in March 2045, secured by engines
226,572 240,371 
WEST V Series B 2020 term notes payable at a fixed rate of interest of 4.21%, maturing in March 2045, secured by engines
31,563 33,485 
WEST V Series C 2020 term notes payable at a fixed rate of interest of 6.66%, maturing in March 2045, secured by engines
8,142 10,695 
WEST IV Series A 2018 term notes payable at a fixed rate of interest of 4.75%, maturing in September 2043, secured by engines
199,846 212,157 
WEST IV Series B 2018 term notes payable at a fixed rate of interest of 5.44%, maturing in September 2043, secured by engines
27,338 29,024 
WEST III Series A 2017 term notes payable at a fixed rate of interest of 4.69%, maturing in August 2042, secured by engines
161,308 175,705 
WEST III Series B 2017 term notes payable at a fixed rate of interest of 6.36%, maturing in August 2042, secured by engines
21,659 23,592 
WWFL credit facility at a floating rate of interest of one-month term SOFR, plus 2.25% at December 31, 2024, maturing in May 2029, secured by engines, airframes, and loan assets
221,882 — 
Note payable at a fixed rate of interest of 5.00%, maturing in February 2033, secured by an engine
20,780 — 
Note payable at a fixed rate of interest of 4.59%, maturing in November 2032, secured by an engine
22,094 22,610 
Note payable at a fixed rate of interest of 4.23%, maturing in June 2032, secured by an engine
17,710 17,802 
Note payable at a fixed rate of interest of 3.18%, matured in July 2024, secured by an aircraft
— 1,235 
 2,292,726 1,827,059 
Less: unamortized debt issuance costs and note discounts(28,174)(24,178)
Total debt obligations$2,264,552 $1,802,881 
Schedule or Principal Outstanding
Principal outstanding at December 31, 2024, is expected to be repayable as follows:
Year(in thousands)
2025$70,690 
2026269,922 
2027192,331 
2028238,289 
20291,465,942 
Thereafter55,552 
Total$2,292,726