The accounting treatment should reflect the actual costs incurred. Training costs are recognized as they are completed, regardless of the delivery status of the aircraft. For the aircraft production, the costs should be accounted for based on the actual production hours completed to date. This ensures that the financial records accurately represent the work performed and the expenses incurred. Reference: = Generally Accepted Accounting Principles (GAAP) and International Financial Reporting Standards (IFRS) on contract accounting and cost recognition.