 The CAB offered no such reprieve.On 14 April 1949 the CAB notified large irregular carriers they had thirty days from the effective date of 20 May to apply for interim licenses while the new order took effect.That same month the Senate Interstate and Foreign Commerce Committee, which had been investigating why scheduled carriers were still unprofitable despite federal subsidies of $100,000,000, turned its attention to the plight of the non-skeds.