LONG-TERM DEBT

Long-term debt obligations on the consolidated balance sheet (in millions):



	June 30, 2016			December 31, 2015
Fixed-rate notes payable due through 2024	$	474		$	520
Variable-rate notes payable due through 2025	155			166
Less debt issuance costs	(3		)	(3		)
Total debt	626			683
Less current portion	117			114
Long-term debt, less current portion	$	509		$	569

Weighted-average fixed-interest rate	5.7		%	5.7		%
Weighted-average variable-interest rate	2.1		%	1.8		%

During the six months ended June 30, 2016, the Company made debt payments of $57 million. As discussed in Note 1, the Company adopted ASU 2015-03 which resulted in a reclassification of debt issuance costs as an offset to debt in the consolidated balance sheet.

At June 30, 2016, long-term debt principal payments for the next five years and thereafter are as follows (in millions):



	Total
Remainder of 2016	$	58
2017	121
2018	151
2019	114
2020	116
Thereafter	69
Total	$	629

Bank Lines of Credit

The Company has two $100 million credit facilities and one $52 million credit facility. All three facilities have variable interest rates based on LIBOR plus a specified margin. One of the $100 million facilities, which expires in September 2017, is secured by aircraft. The other $100 million facility, which expires in March 2017, is secured by certain accounts receivable, spare engines, spare parts and ground service equipment. The $52 million facility expires in October 2016 with a mechanism for annual renewal and is secured by two 737-800 aircraft. The Company has no immediate plans to borrow using any of these facilities. All three credit facilities have a requirement to maintain a minimum unrestricted cash and marketable securities balance of $500 million. The Company is in compliance with this covenant at June 30, 2016.