2013 | 2012 | ||||||
Long-term contracts in progress | $12,608 | $15,130 | |||||
Commercial aircraft programs | 48,065 | 40,389 | |||||
Commercial spare parts, used aircraft, general stock materials and other | 7,793 | 7,206 | |||||
Inventory before advances and progress billings | 68,466 | 62,725 | |||||
Less advances and progress billings | (25,554 | ) | (24,974 | ) | |||
Total | $42,912 | $37,751 | |||||