The accompanying consolidated financial statements include the Company's financial statements and the financial statements of its majority-owned subsidiaries and have been prepared in accordance with GAAP. Investments in business entities in which the Company does not have control, but has the ability to exercise influence over operating and financial policies, including Spirit-Progresstech and TSACCL, are accounted for by the equity method. KIESC is fully consolidated as the Company owns 77.8% of the entity's equity. All intercompany balances and transactions have been eliminated in consolidation. The Company's U.K. subsidiary uses local currency, the British pound, as its functional currency; the Malaysian subsidiary uses the British pound and our Singapore subsidiary uses the Singapore dollar. All other foreign subsidiaries and branches use the U.S. dollar as their functional currency.

As part of the monthly consolidation process, the functional currencies of the Company's international subsidiaries are translated to U.S. dollars using the end-of-month translation rate for balance sheet accounts and average period currency translation rates for revenue and income accounts.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates and assumptions. See Note 3 for details on current changes in estimates.

The results of operations during fiscal 2012 include the favorable impact of cumulative catch-up adjustments relating to prior period revenues of $14.7 primarily associated with productivity and efficiency improvements on core programs.

The results of operations during fiscal 2011 include the favorable impact of cumulative catch-up adjustments relating to prior period revenues of $13.8 driven by productivity improvements, recognition of favorable performance as we closed out B737 and B777 contract blocks in the fourth quarter, and a lower forecast for our short-term incentive accrual, partially offset by increasing material costs in our Wing Systems segment.

The results of operations during fiscal 2010 include the unfavorable impact of cumulative catch-up adjustments relating to prior period revenues of $23.2 resulting from a charge on the Hawker 850 XP contract related to the decision to exit the program, additional cost requirements to meet hardware test schedules on the Sikorsky CH-53K program, and unfavorable cost trends on the B787 program, partially offset by favorable cost performance trends on mature programs.

A significant portion of the Company's revenues are recognized under long-term, volume-based pricing contracts, requiring delivery of products over several years. The Company recognizes revenue under the contract method of accounting and records sales and profits on each contract in accordance with the percentage-of-completion method of accounting, primarily using the units-of-delivery method. The units-of-delivery method recognizes as revenue the contract price of units of a basic production product delivered during a period and as the cost of earned revenue the costs allocable to the delivered units. Costs allocable to undelivered units are reported in the balance sheet as inventory. The method is used in circumstances in which an entity produces units of a basic product under production-type contracts in a continuous or sequential production process to buyers' specifications. Recurring long-term production contracts are usually divided into contract blocks for this purpose, with each block treated as a separate contract for “units-of-delivery” production-type contract accounting purposes.

The total quantity of production units to be delivered under a contract may be set as a single contract accounting block, or it can be split into multiple blocks. Unless the life of the contract is so long that it prevents reliable estimates, the entire contract will typically be set as the contract accounting block quantity. “Life-of-program” or “requirements-based” contracts often lead to continuing sales of more than twenty years. Since this is much longer than can be reliably estimated, Spirit uses parameters based on the contract facts and circumstances to determine the length of the contract block. This analysis includes: considering the customer's firm orders, internal assessment of the market, reliability of cost estimates, potential segmentation of non-recurring elements of the contract, and other factors. Contract block sizes may also be determined based on certain contractual terms such as pricing renegotiation dates, such that certain contract blocks may use an approximate date instead of a defined unit quantity in order to increase the ability to estimate accurately given that the renegotiated pricing is unknown for the planning block. Shorter contract blocks for mature, ongoing programs are common due to the presence of recent cost history and probable forecast accuracy. Mature program contract blocks tend to be approximately two years in length. Initial contract blocks often require a longer time period and a greater number of units in order to take into account the higher cost of early units due to a steeper experience curve and pre-production design costs. Initial contract blocks on newer programs can extend up to ten years or longer. As these programs mature, costs stabilize and efficiencies are realized, subsequent contract block length shortens to take into account the steady state of the continuing production.

Revenues from non-recurring design work are recognized based on substantive milestones or use of the cost-to-cost method, that are indicative of our progress toward completion depending on facts and circumstances. We follow the requirements of FASB authoritative guidance on accounting for the performance of construction-type and certain production-type contracts (the contract method of accounting), and use the cumulative catch-up method in accounting for revisions in estimates. Under the cumulative catch-up method, the impacts of revisions in estimates are recognized immediately when changes in estimated contract profitability become known.

A profit rate is estimated based on the difference between total revenues and total costs over a contract block. Total revenues at any given time include actual historical revenues up to that time plus future estimated revenues. Total costs at any given time include actual historical costs up to that time plus future estimated costs. Estimated revenues include negotiated or expected values for units delivered, estimates of probable recoveries asserted against the customer for changes in specifications, price adjustments for contract and volume changes, and escalation. Costs include the estimated cost of certain pre-production efforts (including non-recurring engineering and planning subsequent to completion of final design) plus the estimated cost of manufacturing a specified number of production units. Estimates take into account assumptions related to future labor performance and rates, and projections related to material and overhead costs including expected “learning curve” cost reductions over the term of the contract. Estimated revenues and costs also take into account the expected impact of specific contingencies that we believe are probable.

Estimates of revenues and costs for our contract blocks span a period of multiple years and are based on a substantial number of underlying assumptions. We believe that the underlying assumptions are sufficiently reliable to provide a reasonable estimate of the profit to be generated. However, due to the significant length of time over which revenue streams will be generated, the variability of the revenue and cost streams can be significant if the assumptions change. Estimates of profit margins for contract accounting blocks are typically reviewed on a quarterly basis. Assuming the initial estimates of sales and costs under the contract block are accurate, the percentage-of-completion method results in the profit margin being recorded evenly as revenue is recognized under the contract block. Changes in these underlying estimates due to revisions in sales and cost estimates may result in profit margins being recognized unevenly over a contract block as such changes are accounted for on a cumulative basis in the period estimates are revised, which we refer to as cumulative catch-up adjustments. Our Estimate At Completion estimating process is not solely an accounting process, but is instead an integrated part of the management of our business, involving numerous personnel in our planning, production control, contracts, cost management, supply chain and program and business management functions. In 2012, we recorded positive cumulative catch-up adjustments for periods prior to 2012 of $7.3 and $9.8 for the Propulsion and Wing Segments, respectively. Additionally, we recorded a negative cumulative catch-up adjustment of $(2.4) in our Fuselage Segment for the same time period. When the current estimates of total contract revenue and total contract cost indicate a loss, a provision for the entire loss on the contract, known as a forward loss charge, is recorded to cost of sales in the period in which they become evident. In 2012, we recognized $644.7 in forward losses.

For revenues not recognized under the contract method of accounting, the Company recognizes revenues from the sale of products at the point of passage of title, which is generally at the time of shipment. Shipping and handling costs are included in cost of sales. Revenues earned from providing maintenance services, including any contracted research and development, are recognized when the service is complete or other contractual milestones are attained. Revenues from non-recurring design work are recognized based on substantive milestones that are indicative of our progress toward completion. Non-recurring revenues, which are derived primarily from engineering and design efforts, were $239.4, $222.0 and $297.0 for each of the twelve month periods ending December 31, 2012, December 31, 2011 and December 31, 2010, respectively.

As required by FASB authoritative guidance related to accounting for consideration given by a vendor to a customer, under an agreement with Airbus, certain payments are amortized as a reduction to revenues on units delivered. Additionally, in 2012 we began making certain payments related to our Gulfstream G280 and G650 programs. The Company recognized $51.1 and zero as a reduction to net revenues for the periods ended December 31, 2012 and December 31, 2011, respectively.

A significant portion of the Company's future revenues is expected to be derived from new programs, most notably the B787, on which we may be contracted to provide design and engineering services, recurring production, or both. There are several risks inherent to such new programs. In the design and engineering phase, we may incur costs in excess of our forecasts due to several factors, including cost overruns, customer-directed change orders and delays in the overall program. We may also incur higher than expected recurring production costs, which may be caused by a variety of factors, including the future impact of engineering changes (or other change orders) or our inability to secure contracts with our suppliers at projected cost levels. Our ability to recover these excess costs from the customer will depend on several factors, including our rights under our contracts for the new programs. In determining our profits and losses in accordance with the percentage-of-completion method of contract accounting, we are required to make significant assumptions regarding our future costs, as well as the estimated number of units to be manufactured under the contract and other variables. We continually review and update our assumptions based on market trends and our most recent experience. If we make material changes to our assumptions, such as a reduction in the estimated number of units to be produced under the contract (which could be caused by emerging market trends or other factors), an increase in future production costs or a change in the recoverability of increased design or production costs, we may experience negative cumulative catch-up adjustments related to revenues previously recognized. In some cases, we may recognize forward loss amounts.

Research and development includes costs incurred for experimentation, design and testing and are expensed as incurred as required under FASB authoritative guidance pertaining to accounting for research and development costs.

The value of the Company's 50.0% ownership interest in Spirit-Progresstech LLC totaled $3.6 at December 31, 2012 and is accounted for under the equity method of accounting.

The value of the Company's 31.5% ownership interest in Taikoo Spirit AeroSystems Composite Co. Ltd. totaled $1.5 at December 31, 2012 and is accounted for under the equity method of accounting.

Cash and cash equivalents represent all highly liquid investments with original maturities of three months or less.

Accounts receivable are recorded at the invoiced amount and do not bear interest. Consistent with industry practice, the Company classifies unbilled receivables related to contracts accounted for under the long-term contract method of accounting, as current. The Company determines an allowance for doubtful accounts based on a review of outstanding receivables. Account balances are charged off against the allowance after the potential for recovery is considered remote. The Company's allowance for doubtful accounts was approximately $4.3 and $1.4 at December 31, 2012 and December 31, 2011, respectively.

Accounts receivable, net includes unbilled receivables on long-term aerospace contracts, comprised principally of revenue recognized on contracts for which amounts were earned but not contractually billable as of the balance sheet date, or amounts earned in which the recovery will occur over the term of the contract, which could exceed one year.

Raw materials are stated at lower of cost (principally on an actual or average cost basis) or market. Inventoried costs attributed to units delivered under long-term contracts are based on the estimated average cost of all units expected to be produced and are determined under the learning curve concept which anticipates a predictable decrease in unit costs as tasks and production techniques become more efficient through repetition and supply chain costs are reduced as contracts are negotiated and design changes result in lower cost. This usually results in an increase in inventory (referred to as “excess-over-average” or “deferred production costs”) during the early years of a contract. These costs are deferred only to the extent the amount of actual or expected excess-over-average is reasonably expected to be fully offset by lower-than-average costs in future periods of a contract. If in-process inventory plus estimated costs to complete a specific contract exceed the actual plus anticipated remaining sales value of such contract, such excess is charged to cost of sales in the period the loss becomes known, thus reducing inventory to estimated realizable value. Costs in inventory include amounts relating to contracts with long production cycles, some of which are not expected to be realized within one year.

The Company reviews its general stock materials and spare parts inventory each quarter to identify impaired inventory, including excess or obsolete inventory, based on historical sales trends and expected production usage. Impaired inventories are written off to work-in-process in the period identified.

Work-in-process inventory includes deferred production costs for the excess of production costs over the estimated average cost per ship set, and credit balances for favorable variances on contracts between actual costs incurred and the estimated average cost per ship set for units delivered under the current production blocks. Recovery of excess over average deferred production costs is dependent on the number of ship sets ultimately sold and the ultimate selling prices and lower production costs associated with future production under these contract blocks. Work-in-process inventory also includes non-recurring production costs. Non-recurring production costs include design and engineering costs and test articles.

Finished goods inventory is stated at its estimated average per unit cost based on all units expected to be produced.

Capitalized pre-production costs include certain contract costs, including applicable overhead, incurred before a product is manufactured on a recurring basis. Significant customer directed work changes can also cause pre-production costs to be incurred. These costs are typically recovered over a certain number of ship set deliveries.

Property, plant and equipment are stated at cost less accumulated depreciation. Depreciation is applied using a straight-line method over the useful lives of the respective assets as described in the following table:

	Estimated Useful Life
Land improvements		20 years
Buildings		45 years
Machinery and equipment		3-20 years
Tooling - Airplane program - B787, Rolls-Royce		5-20 years
Tooling - Airplane program - all others		2-10 years
Capitalized software		3-7 years

We capitalize certain costs, such as software coding, installation and testing, that are incurred to purchase or to create and implement internal-use computer software in accordance with FASB authoritative guidance pertaining to capitalization of cost for internal-use software. Our capitalization policy includes specifications that the software must have a service life greater than one year, is legally and substantially owned by Spirit, and has an acquisition cost of greater than $0.1.

Intangible assets are recorded at estimated fair value and are comprised of patents, favorable leasehold interests, and customer relationships that are amortized on a straight-line basis over their estimated useful lives, ranging from 6 to 16 years for patents, 14 to 24 years for favorable leasehold interests, and 8 years for customer relationships.

Spirit reviews capital and amortizing intangible assets (long-lived assets) for impairment on an annual basis or whenever events or changes in circumstances indicate that the carrying amount may not be recoverable in accordance with FASB authoritative guidance on accounting for the impairment or disposal of long-lived assets. Under the standard, assets must be classified as either held-for-use or available-for-sale. An impairment loss is recognized when the carrying amount of an asset that is held for use exceeds the projected undiscounted future net cash flows expected from its use and disposal, and is measured as the amount by which the carrying amount of the asset exceeds its fair value, which is measured by discounted cash flows when quoted market prices are not available. For assets available-for-sale, an impairment loss is recognized when the carrying amount exceeds the fair value less cost to sell. The Company performs an annual impairment test for goodwill in the fourth quarter of each year, in accordance with FASB authoritative guidance pertaining to goodwill and other intangible assets, or more frequently, if an event occurs or circumstances change that would more likely than not reduce fair value below current value.

Costs relating to long-term debt are deferred and included in other long-term assets. These costs are amortized over the term of the related debt or debt facilities, and are included as a component of interest expense.

We use derivative financial instruments to manage the economic impact of fluctuations in currency exchange rates and interest rates. To account for our derivative financial instruments, we follow the FASB guidance on accounting for derivatives and hedges. Derivative financial instruments are recognized on the Consolidated Balance Sheets as either assets or liabilities and are measured at fair value. Changes in fair value of derivatives are recorded each period in earnings or accumulated other comprehensive income, depending on whether a derivative is effective as part of a hedge transaction, and if it is, the type of hedge transaction. Gains and losses on derivative instruments reported in other comprehensive income are subsequently included in earnings in the periods in which earnings are affected by the hedged item or when the hedge is no longer effective. We present the cash flows associated with our derivatives as a component of the operating or investing sections of the statement of cash flows. Our use of derivatives has generally been limited to interest rate swaps and foreign currency forward contracts. The Company enters into foreign currency forward contracts to reduce the risks associated with the changes in foreign exchange rates on sales and cost of sales denominated in currencies other than the entities' functional currency.

Financial instruments are measured in accordance with FASB authoritative guidance related to fair value measurements. This guidance clarifies the definition of fair value, prescribes methods for measuring fair value, establishes a fair value hierarchy based on the inputs used to measure fair value, and expands disclosures about fair value measurements. See Note 12, Fair Value Measurements.

Income taxes are accounted for in accordance with FASB authoritative guidance on accounting for income taxes. Deferred income tax assets and liabilities are recognized for the future income tax consequences attributable to differences between the financial statement carrying amounts for existing assets and liabilities and their respective tax bases. A valuation allowance is recorded to reduce deferred income tax assets to an amount that in management's opinion will ultimately be realized. Tax rate changes impacting these assets and liabilities are recognized in the period during which the rate change occurs.

We record an income tax expense or benefit based on the net income earned or net loss incurred in each tax jurisdiction and the tax rate applicable to that income or loss. In the ordinary course of business, there are transactions for which the ultimate tax outcome is uncertain. These uncertainties are accounted for in accordance with FASB authoritative guidance on accounting for the uncertainty in income taxes. The final tax outcome for these matters may be different than management's original estimates made in determining the income tax provision. A change to these estimates could impact the effective tax rate and net income or loss in subsequent periods. We use the flow-through accounting method for tax credits. Under this method, tax credits reduce income tax expense.

Many of the Company's employees are participants in various stock compensation plans. The Company accounts for stock option plans, restricted share plans and other stock-based payments in accordance with FASB authoritative guidance pertaining to share-based payment. The expense attributable to the Company's employees is recognized over the period the amounts are earned and vested, as described in Note 18.

Provisions for estimated expenses related to service and product warranties and certain extraordinary rework are made at the time products are sold. These estimates are established using historical information on the nature, frequency and average cost of warranty claims.

The following is a roll forward for the warranty and extraordinary rework provision as of December 31, 2012 and December 31, 2011:

	2012		2011
Balance, January 1	$	19.6	$	18.7
Charges to costs and expenses⁽¹⁾		12.0		18.4
Write-offs, net of recoveries		(0.9)		(17.5)
Exchange rate		0.2		-
Balance, December 31	$	30.9	$	19.6