Using the indirect method, CFO is net income increased by 20X5 depreciation ($1,000,000) and decreased by the gain recognized on the sale of the plane [$10,000,000 sale price − ($15,000,000 original cost − $10,000,000 accumulated depreciation including 20X5) = $5,000,000]. $12,000,000 + $1,000,000 − $5,000,000 = $8,000,000.