Inventories

12 Months Ended

Dec. 31, 2021

Inventories at December 31 consisted of the following:


	2021	2020
Long-term contracts in progress	$872	$823
Commercial aircraft programs	68,106	70,153
Commercial spare parts, used aircraft, general stock materials and other	9,845	10,739
Total	$78,823	$81,715

Commercial spare parts, used aircraft, general stock materials and other includes capitalized precontract costs of $648 at December 31, 2021 and $733 at December 31, 2020 primarily related to KC-46A Tanker and Commercial Crew. See Note 13.

Commercial Aircraft Programs

The decrease in commercial aircraft programs inventory during 2021 reflects lower 737 MAX inventory due to resumption of deliveries and a reach-forward loss on the 787 program. These decreases were partially offset by a continued buildup of 787 aircraft, as well as growth in 777X inventory. Commercial aircraft programs inventory includes approximately 335 737 MAX aircraft and 110 787 aircraft at December 31, 2021 as compared with 425 737 MAX aircraft and 80 787 aircraft at December 31, 2020.

A number of customers have requested to defer deliveries or to cancel orders. 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 December 31, 2021 and 2020, commercial aircraft programs inventory included the following amounts related to the 737 program: deferred production costs of $1,296 and $2,159 and unamortized tooling and other non-recurring costs of $617 and $480. At December 31, 2021, $1,906 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 $7 is expected to be recovered from units included in the program accounting quantity that represent expected future orders.

At December 31, 2021 and 2020, commercial aircraft programs inventory included the following amounts related to the 777X program: $3,363 and $1,727 of work in process and $3,521 and $3,295 of unamortized tooling and other non-recurring costs.

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 December 31, 2020 and remain immaterial at December 31, 2021. 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, any 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.

During the fourth quarter of 2021, we determined that estimated costs to complete the 787 program plus costs already included in 787 inventory exceed estimated revenues from the program. The resulting reach-forward loss of $3,460 was recorded as a reduction to deferred production costs. At

December 31, 2021 and 2020, commercial aircraft programs inventory included the following amounts related to the 787 program: deferred production costs of $11,693 and $14,976, $1,907 and $1,865 of supplier advances, and $1,815 and $1,863 of unamortized tooling and other non-recurring costs. At December 31, 2021, $9,024 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 $4,484 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 $3,290 and $2,992 at December 31, 2021 and 2020.