Inventories

3 Months Ended

Mar. 31, 2021

Inventories consisted of the following:


	March 31 2021	December 31 2020
Long-term contracts in progress	$913	$823
Commercial aircraft programs	71,008	70,153
Commercial spare parts, used aircraft, general stock materials and other	10,747	10,739
Total	$82,668	$81,715

Commercial spare parts, used aircraft, general stock materials and other includes capitalized precontract costs of $571 at March 31, 2021 and $733 at December 31, 2020 primarily related to KC-46A Tanker and Commercial Crew. See Note 9.

Commercial Aircraft Programs

The increase in commercial aircraft programs inventory during 2021 reflects a continued buildup of 787 aircraft caused by 787 production issues and associated rework, which resulted in a significant reduction in 787 deliveries. This was partially offset by a decrease in 737 inventory reflecting the resumption of deliveries. Commercial aircraft programs inventory includes approximately 400 737 MAX aircraft and 100 787 aircraft at March 31, 2021 as compared with 425 737 MAX aircraft and 80 787 aircraft at December 31, 2020.

We are currently remarketing certain aircraft and may have to remarket additional aircraft in future periods. If we are unable to successfully remarket the aircraft, determine further production rate reductions are necessary, and/or contract the program accounting quantities, future earnings may be reduced and/or additional reach-forward losses may have to be recorded.

At March 31, 2021 and December 31, 2020, commercial aircraft programs inventory included the following amounts related to the 737 program: deferred production costs of $1,861 and $2,159 and unamortized tooling and other non-recurring costs of $632 and $480. At March 31, 2021, $2,391 of 737 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 $102 is expected to be recovered from units included in the program accounting quantity that represent expected future orders.

At March 31, 2021 and December 31, 2020, commercial aircraft programs inventory included the following amounts related to the 777X program: unamortized tooling and other non-recurring costs of $3,351 and $3,295. During the fourth quarter of 2020, we determined that estimated costs to complete the 777X program plus costs already included in 777X inventory exceed estimated revenues from the program. The resulting reach-forward loss of $6,493 was recorded as a reduction to deferred production costs. As a result, 777X deferred production costs were immaterial at March 31, 2021 and December 31, 2020. The level of profitability on the 777X program will be subject to a number of factors. These factors include continued market uncertainty, the impacts of COVID-19 on our production system as well as impacts on our supply chain and customers, further production rate adjustments for the 777X or other commercial aircraft programs, contraction of the accounting quantity and potential risks associated with the testing program and the timing of aircraft certification. One or more of these factors could result in additional reach-forward losses on the 777X program in future periods.

At March 31, 2021 and December 31, 2020, commercial aircraft programs inventory included the following amounts related to the 787 program: deferred production costs of $14,803 and $14,976, $1,795 and $1,865 of supplier advances, and $1,857 and $1,863 of unamortized tooling and other non-recurring costs. At March 31, 2021, $11,557 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 $5,103 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 $3,114 and $2,992 at March 31, 2021 and December 31, 2020.