September 30
2011

December 31
2010

Long-term contracts in progress

$

14,581

$

14,400

Commercial aircraft programs

33,376

26,550

Commercial spare parts, used aircraft, general stock materials and other

7,027

5,788

Inventory before advances and progress billings

54,984

46,738

Less advances and progress billings

(24,491

)

(22,421

)

Total

$

30,493

$

24,317