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Bureau were the only ones designated to ask questions directly of the witnesses, the Presiding Examiner, acting under instruction of the Board, announced at the opening of the hearing that any person who had any evidence, questions or suggestions to present for consideration in the proceeding might submit them to the Examiner. In accordance with this suggestion, 21 written questions were so submitted and each one was propounded and answered during the hearing.
Upon the basis of all the evidence accumulated in the investigation the Board now makes its report in accordance with the provisions of the act.
II.
SUMMARY AND ANALYSIS OF EVIDENCE
Air Carrier
American, a Delaware corporation, was operating at the time of the accident as an air carrier under a currently effective certificate of public convenience and necessity and a currently effective air carrier operating certificate, both of which had been theretofore issued to it pursuant to the Act. Trip 21 was being conducted pursuant to authority contained in American's certificate of public convenience and necessity for Route No. 25 by which it is authorized to engage in air transportation of persons, property and mail between the terminal point Washington, D. C., the intermediate points Elkins, West Virginia; Clarksburg, West Virginia; Parkersburg, West Virginia; Charleston--
