| 2.4. | Property, plant and equipment |
The land of LATAM Airlines Group S.A. and Subsidiaries, are recognized at cost less any accumulated impairment loss. The rest of the Properties, plants and equipment are recorded, both in their initial recognition and in their subsequent measurement, at their historical cost less the corresponding depreciation and any loss due to deterioration.
The amounts of advances paid to the aircraft manufacturers are activated by the Company under Construction in progress until they are received.
Subsequent costs (replacement of components, improvements, extensions, etc.) are included in the value of the initial asset or are recognized as a separate asset, only when it is probable that the future economic benefits associated with the elements of property, plant and equipment, they will flow to the Company and the cost of the item can be determined reliably. The value of the replaced component is written off. The rest of the repairs and maintenance are charged to the result of the year in which they are incurred.
The depreciation of the properties, plants and equipment is calculated using the linear method over their estimated technical useful lives; except in the case of certain technical components which are depreciated on the basis of cycles and hours flown.
The residual value and the useful life of the assets are reviewed and adjusted, if necessary, once a year.
When the value of an asset exceeds its estimated recoverable amount, its value is immediately reduced to its recoverable amount (Note 2.8).
Losses and gains from the sale of property, plant and equipment are calculated by comparing the consideration with the book value and are included in the consolidated statement of income.