Per Month Less: Fixed expenses: Depreciation on alrcraft $ 8.700 $ 8.700 $ 8,700 S Landing fees ..... 2,700 3,000 2.700 300 U Supervisory salaries ...mmmmmm mmmis 27,000 25.800 27,000 1,200 F Selling and administrative 33,000 37,200 33.000 4.200 U Total fixed expenses $71,400 $ 74,700 $ 71,400 $ 3,300 U Operating Income .... $ 25,800 $ 38.850 $13,050 U Based on the information in Ashyk Aspan's report, prepare a performance report for September using air miles as the cost driver. 1. In spite of several favorable expense variances shown on Ashyk Aspan's report, the company's September operating income was only about two-thirds of the expected level. Why? 2. Write a brief memo to the manager of aircraft operations explaining why his variance report is misleading