aviation competition issues related to the proposed united airlines us airways merger states general accounting office gao report congressional requesters december 2000 p government printing 1991 523 762 01 212 printed copies of this document will be available shortly form 171 rev 3 99 1 contents page letter appendixes i scope and methodology 26 ii combined domestic international measures airline size 30 iii selected financial data for some major calendar year 1999 first 9 months 31 iv markets in which could reduce only one or two competing 32 v increase 41 vi contacts staff acknowledgments 45 figures new would carry over quarter all passengers 5 2 map routes scheduled flown by 7 number subject a loss due 13 4 that benefit from an 18 tables 12 ending june 10