Inventories

Inventories consisted of the following:



	March 31 2014			December 31 2013
Long-term contracts in progress		$13,257			$12,608
Commercial aircraft programs	51,789			48,065
Commercial spare parts, used aircraft, general stock materials and other	7,641			7,793
Inventory before advances and progress billings	72,687			68,466
Less advances and progress billings	(27,746		)	(25,554		)
Total		$44,941			$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 March 31, 2014 and December 31, 2013, the inventory balance, net of advances, was $350 and $425. At March 31, 2014, $333 of this inventory related to unsold launches. See Note 10.

Capitalized precontract costs of $826 and $520 at March 31, 2014 and December 31, 2013, are included in inventories.

Commercial Aircraft Programs

At March 31, 2014 and December 31, 2013, commercial aircraft programs inventory included the following amounts related to the 787 program: $30,246 and $27,576 of work in process (including deferred production costs of $23,123 and $21,620), $2,303 and $2,189 of supplier advances, and $3,453 and $3,377 of unamortized tooling and other non-recurring costs. At March 31, 2014, $17,838 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 $8,737 is expected to be recovered from units included in the program accounting quantity that represent expected future orders.

At March 31, 2014 and December 31, 2013, commercial aircraft programs inventory included the following amounts related to the 747 program: $1,649 and $1,554 of deferred production costs, net of previously recorded reach-forward losses, and $552 and $563 of unamortized tooling costs. At March 31, 2014, $1,189 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 $1,012 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 $3,433 and $3,465 at March 31, 2014 and December 31, 2013.