Inventories

Inventories consisted of the following:



	June 30 2014			December 31 2013
Long-term contracts in progress		$13,250			$12,608
Commercial aircraft programs	54,256			48,065
Commercial spare parts, used aircraft, general stock materials and other	7,295			7,793
Inventory before advances and progress billings	74,801			68,466
Less advances and progress billings	(28,550		)	(25,554		)
Total		$46,251			$42,912

Long-Term Contracts in Progress

Long-term contracts in progress includes Delta launch program inventory that is being sold at cost to United Launch Alliance (ULA) under an inventory supply agreement that terminates on March 31, 2021. At June 30, 2014, the inventory balance was $322 (net of advances of $307) and $425 (net of advances of $331) at December 31, 2013. At June 30, 2014, $333 of this inventory related to unsold launches. See Note 10.

Capitalized precontract costs of $1,074 and $520 at June 30, 2014 and December 31, 2013, are included in inventories.

Commercial Aircraft Programs

At June 30, 2014 and December 31, 2013, commercial aircraft programs inventory included the following amounts related to the 787 program: $31,880 and $27,576 of work in process (including deferred production costs of $24,242 and $21,620), $2,320 and $2,189 of supplier advances, and $3,442 and $3,377 of unamortized tooling and other non-recurring costs. At June 30, 2014, $18,367 of 787 deferred production costs, unamortized tooling and other non-recurring costs are expected to be recovered from units included in the program accounting quantity that have firm orders and $9,317 is expected to be recovered from units included in the program accounting quantity that represent expected future orders.

At June 30, 2014 and December 31, 2013, commercial aircraft programs inventory included the following amounts related to the 747 program: $1,756 and $1,554 of deferred production costs, net of previously recorded reach-forward losses, and $550 and $563 of unamortized tooling costs. At June 30, 2014, $1,221 of 747 deferred production costs and unamortized tooling are expected to be recovered from units included in the program accounting quantity that have firm orders and $1,085 is expected to be recovered from units included in the program accounting quantity that represent expected future orders.

Commercial aircraft programs inventory included amounts credited in cash or other consideration (early issue sales consideration) to airline customers totaling $3,269 and $3,465 at June 30, 2014 and December 31, 2013.