§ 29. Commander BELLAIRSasked the First Lord of the Admiralty the cost of each air plane and pilot per annum carried in an aircraft carrier in peace time, spreading the whole annual cost of the carrier over the number of aircraft carried, and allowing for interest on first cost and replacement of aircraft for their allotted life and interest on first cost and replacement of aircraft carriers after 20 years, with all the incidental charges of pay allowances, victualling stores, fuel, repairs, and liability in regard to retired pay and pensions?