Delta Air Lines Inc. (DAL)

Spare Parts

Inventories of expendable parts related to flight equipment, which cannot be economically repaired, reconditioned or reused after removal from the aircraft, are carried at moving average cost and charged to operations as consumed. An allowance for obsolescence is provided over the remaining useful life of the related fleet. Delta also provides allowances for parts identified as excess or obsolete to reduce the carrying costs to the lower of cost or net realizable value. These parts are assumed to have an estimated residual value of 5% of the original cost.

Refinery

Refined product, feedstock and blendstock inventories, all of which are finished goods, are carried at recoverable cost. Delta uses jet fuel in the airline operations that is produced by the refinery and procured through the exchange with third parties of gasoline, diesel and other refined products ("non-jet fuel products") the refinery produces. Cost is determined using the first-in, first-out method. Costs include the raw material consumed plus direct manufacturing costs (such as labor, utilities and supplies) incurred and an applicable portion of manufacturing overhead.

Source: Delta Air Lines Inc., Annual Report

Delta Air Lines Inc., Statement of Financial Position, Inventory

USD $ in millions

Source: Based on data from Delta Air Lines Inc. Annual Reports

Item	Description	The company
Fuel inventory	Carrying amount as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.	Delta Air Lines Inc.'s fuel inventory increased from 2015 to 2016 and from 2016 to 2017.
Inventories	Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer).	Delta Air Lines Inc.'s inventories increased from 2015 to 2016 and from 2016 to 2017.