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COSTS AND EXPENSES BY NATURE (Tables)

12 Months Ended

Dec. 31, 2017

Material income and expense [abstract]

Schedule of operating costs and administrative expenses

The main operating costs and administrative expenses are detailed below:

		For the periods ended
		December 31,
		2017				2016				2015
		ThUS$				ThUS$				ThUS$

Aircraft fuel			2,318,816				2,056,643				2,651,067
Other rentals and landing fees			1,172,129				1,077,407				1,109,826
Aircraft rentals			579,551				568,979				525,134
Aircraft maintenance			430,825				366,153				437,235
Comissions			252,474				269,296				302,774
Passenger services			288,662				286,621				295,439
Other operating expenses			1,381,546				1,424,595				1,293,320
Total			6,424,003				6,049,694				6,614,795

Schedule of depreciation and amortisation expense

Depreciation and amortization are detailed below:

		For the period ended
		December 31,
		2017				2016				2015
		ThUS$				ThUS$				ThUS$

Depreciation (*)			943,215				910,071				897,670
Amortization			58,410				50,257				36,736
Total			1,001,625				960,328				934,406

(*) Include the depreciation of Property, plant and equipment and the maintenance cost of aircraft held under operating leases. The amount of maintenance cost included within the depreciation line item at December 31, 2017 is ThUS$ 359,940 and ThUS$ 345,651 for the same period of 2016.

Schedule of finance costs

The detail of financial costs is as follows:

		For the period ended
		December 31,
		2017				2016				2015
		ThUS$				ThUS$				ThUS$

Bank loan interest			347,551				352,405				331,511
Financial leases			37,522				32,573				42,855
Other financial instruments			8,213				31,358				38,991
Total			393,286				416,336				413,357