NOTE 28 - OTHER INCOME, BY FUNCTION
Other income by function is as follows:
| For the period ended | ||||||||||||
| December 31, | ||||||||||||
| 2017 | 2016 | 2015 | ||||||||||
| ThUS$ | ThUS$ | ThUS$ | ||||||||||
| Coalition and loyalty program Multiplus | 240,952 | 174,197 | 154,958 | |||||||||
| Tours | 109,463 | 133,575 | 113,225 | |||||||||
| Aircraft leasing | 103,741 | 65,011 | 46,547 | |||||||||
| Customs and warehousing | 26,793 | 24,548 | 25,457 | |||||||||
| Maintenance | 6,585 | 17,090 | 11,669 | |||||||||
| Duty free | 8,038 | 11,141 | 16,408 | |||||||||
| Other miscellaneous income | 54,317 | 113,186 | 17,517 | |||||||||
| Total | 549,889 | 538,748 | 385,781 | |||||||||