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DEBT (Tables)
 12 Months Ended
Sep. 30, 2024
Debt Disclosure [Abstract]  
Schedule of Debt
The Company’s debt consists of the following (in millions):
September 30, 2024
Gross AmountDebt Issuance CostsOriginal Issue (Discount) PremiumNet Amount
Short-term borrowings—trade receivable securitization facility
$487 $(1)$— $486 
Term loans$8,702 $(25)$(35)$8,642 
5.50% senior subordinated notes due 2027 (“5.50% 2027 Notes”)
2,650 (9)— 2,641 
6.75% secured notes due 2028 (“2028 Secured Notes”)
2,100 (15)(8)2,077 
4.625% senior subordinated notes due 2029 (“4.625% 2029 Notes”)
1,200 (6)— 1,194 
6.375% secured notes due 2029 (“2029 Secured Notes”)
2,750 (22)(1)2,727 
4.875% senior subordinated notes due 2029 (“4.875% 2029 Notes”)
750 (4)— 746 
6.875% secured notes due 2030 (“2030 Secured Notes”)
1,450 (12)— 1,438 
7.125% secured notes due 2031 (“2031 Secured Notes”)
1,000 (9)(7)984 
6.625% secured notes due 2032 (“2032 Secured Notes”)
2,200 (20)— 2,180 
6.00% secured notes due 2033 (“2033 Secured Notes”)
1,500 (14)— 1,486 
Government refundable advances17 — — 17 
Finance lease obligations262 — — 262 
24,581 (136)(51)24,394 
Less: current portion99 (1)— 98 
Long-term debt$24,482 $(135)$(51)$24,296 
September 30, 2023
Gross AmountDebt Issuance CostsOriginal Issue (Discount) PremiumNet Amount
Short-term borrowings—trade receivable securitization facility
$350 $(1)$— $349 
Term loans$6,249 $(22)$(48)$6,179 
6.25% secured notes due 2026 (“2026 Secured Notes”)
4,400 (25)2 4,377 
7.50% senior subordinated notes due 2027 (“7.50% 2027 Notes”)
550 (2)— 548 
5.50% 2027 Notes
2,650 (12)— 2,638 
2028 Secured Notes2,100 (19)(10)2,071 
4.625% 2029 Notes
1,200 (7)— 1,193 
4.875% 2029 Notes
750 (5)— 745 
2030 Secured Notes1,450 (14)— 1,436 
Government refundable advances21 — — 21 
Finance lease obligations193 — — 193 
19,563 (106)(56)19,401 
Less: current portion71 — — 71 
Long-term debt$19,492 $(106)$(56)$19,330 
Schedule of Term Loans
As of September 30, 2024, TransDigm had $8,702 million in fully drawn term loans (the “Term Loans Facility”), $910 million in revolving commitments, of which $843 million was available to the Company, subject to an interest rate of 2.25% per annum. As of September 30, 2023, TransDigm had $6,249 million in fully drawn term loans, $810 million in revolving commitments, of which $755 million was available to the Company, subject to an interest rate of 2.50% per annum. The unused portion of the revolving commitments is subject to a fee of 0.5% per annum for both fiscal 2024 and 2023. The total fees incurred on the unused portion of the revolving commitments were not material in fiscal 2024 or fiscal 2023.
Term Loans FacilityMaturity DateInterest Rate under Term Loans FacilityAggregate Principal as of September 30,
20242023
Tranche H (1)
February 22, 2027Term SOFR plus 3.25%$— $1,713 
Tranche IAugust 24, 2028Term SOFR plus 2.75%$1,871 $4,536 
Tranche JFebruary 28, 2031Term SOFR plus 2.50%$3,632 $— 
Tranche KMarch 22, 2030Term SOFR plus 2.75%$1,699 $— 
Tranche LJanuary 19, 2032Term SOFR plus 2.50%$1,500 $— 
(1)As previously disclosed within this note, during fiscal 2024, Tranche H was replaced by Tranche K.
Future Maturities of Long-Term Debt
At September 30, 2024, future maturities of long-term debt (excluding finance leases) are as follows (in millions), refer to Note 17, “Leases,” for future maturities of finance leases:
Fiscal Years Ended September 30, 
2025$93 
202692 
202792 
20286,637 
20294,768 
Thereafter12,637 
Total$24,319