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11
During its descent the airplane apparently was partially bat not completely out of control
12
There was no fire in or about the airplane prior to impact
13
No evidence of sabotage was discovered
14
There was no power plant failure prior to the accident, and the engines were functioning normally at the time the airplane struck the ground Nothing was found to indicate that there had been any structural failure or failure of the control system of the airplane As a result of the complete destruction of some portions of the airplane, however, it is impossible to eliminate completely the possibility that such failure occurred
Now, therefore, the Board finds that the evidence presently available and in possession of the Board is not sufficient to permit determination of the probable cause of this accident The investigation will be continued and in the event of the discovery of further evidence which would enable the Board to ascertain the probable cause of the accident, an appropriate supplemental report will then be issued
BY THE CIVIL AERONAUTICS BOARD
/s/
L Welch Pogue
L. Welch Pogue
/s/
George P Baker
George P. Baker
/s/
Harllee Branch
Harllee Branch
/s/
Oswald Ryan
Oswald Ryan
/s/
Edward Warner
Edward Warner
