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COSTS AND EXPENSES BY NATURE
 12 Months Ended
Dec. 31, 2019
Disclosure of expenses by nature [text block] [Abstract]  
Disclosure of expenses by nature [text block]

NOTE 27 - COSTS AND EXPENSES BY NATURE


(a)Costs and operating expenses

The main operating costs and administrative expenses are detailed below:


   For the year ended 
   December 31, 
   2019   2018   2017 
   ThUS$   ThUS$   ThUS$ 
             
Aircraft fuel   2,929,008    2,983,028    2,318,816 
Other rentals and landing fees (*)   1,275,859    1,206,881    1,233,640 
Aircraft maintenance   444,611    366,627    422,943 
Comisions   221,884    222,506    252,474 
Passenger services   261,330    280,279    288,662 
Other operating expenses   1,291,895    1,229,311    1,374,368 
Total  6,424,587   6,288,632   5,890,903 

(*) Lease expenses are included within this amount (See Note 2.21)


   For the period ended 
   December 31, 
   2019   2018   2017 
   ThUS$   ThUS$   ThUS$ 
       Restated   Restated 
             
Payments for leases of low-value assets   31,982    27,929    35,240 
Total  31,982   27,929   35,240 

(b)Depreciation and amortization

Depreciation and amortization are detailed below:


   For the year ended 
   December 31, 
   2019   2018   2017 
   ThUS$   ThUS$   ThUS$ 
             
Depreciation (*)   1,389,465    1,307,032    1,318,725 
Amortization   80,511    65,596    58,410 
Total  1,469,976   1,372,628   1,377,135 

(*) Included within this amount is the depreciation of the Properties, plants and equipment (See Note 17 (a)) and the maintenance of the aircraft recognized as assets by right of use. The maintenance cost amount included in the depreciation line for the period ended December 31, 2019 is ThUS$ 445,680 and ThUS$ 366,393 for the same period 2018.


(c)Personnel expenses

The costs for personnel expenses are disclosed in Note 23 liability for employee benefits.


(d)Financial costs

The detail of financial costs is as follows:


   For the year ended 
   December 31, 
   2019   2018   2017 
   ThUS$   ThUS$   ThUS$ 
             
Bank loan interest   325,650    283,786    347,551 
Financial leases   61,980    62,202    37,522 
Lease liabilities   181,814    182,868    185,947 
Other financial instruments   20,490    10,281    8,213 
Total   589,934    539,137    579,233 

Costs and expenses by nature presented in this Note plus the Employee expenses disclosed in Note 23, are equivalent to the sum of cost of sales, distribution costs, administrative expenses, other expenses and financing costs presented in the consolidated statement of income by function.