The army failed in its mission to deliver the mail. Mnay planes crashed and others were grounded. The government was forces ot offer mail contracts to the airlines. The bids this time were comptetative and a number of small airliens received contracts. The big four lines at the time (TWA, Eastern Transportation, United and American Airway) however, received the lions share of the contracts. Under the terms of the Black-McKellor Act United Aircraft was forced to split three ways. The west coast aircraft manufacturing became Boeing, the east coast engine manufacturing became Pratt &Whitney and the airline became a seperate corporation.