Total estimated acquisition cost, PAUC , APUC, lifetime operating and sustainment costs, constant FY2002 dollars, then-year dollars, constant FY2010 dollars, are just a few of the factors and variables involved in coming up with a credible and realistic “price tag” for the F-35.
Now, add to this mix the number of F-35 variants and final configurations, guesses at and adjustments for future inflation, per-unit cost dependency on total aircraft produced — including assumptions for international buys — numerous and continuing changes in government requirements and scope of work, differences, changes and vagaries in cost accounting methodologies and rules, etc., and one begins to get the idea.
Additional factors and considerations are major cost/budget implications of political issues such as the on-again, off-again, on-again alternate engine debate — an engine now to be developed by General Electric and Rolls Royce for the next two years with their own funds, hoping for a” change of heart” by Congress.
Such issues, vagaries and variables contribute to the complexity of putting a credible and reliable price tag on the F-35 and leave plenty of room for error, misunderstanding and confusion.
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Of course I cannot tell you how much an F-35 will eventually cost the U.S. taxpayer, but then I doubt it whether Lockheed Martin, the JSF Program Office, the Pentagon, the House and Senate Armed Services Committees — or anyone — will be able to.