Maintenance History
The airplane had undergone extensive maintenance that included work on the control column. During this maintenance, the upper half of the control column was replaced with a throw-over yoke, and the aileron system was rerigged. After the work was completed, the airplane was tied down outside for three months before the pilot-in-command retrieved it.
Accident Sequence
According to a witness, the airplane lifted off the water and immediately started a left bank. The bank continued to increase until the airplane struck the ground.
Post-Accident Examination
Post-accident examination of the wreckage revealed that the control cables at the base of the control column operated in reverse of the description provided in the maintenance manual. However, complete control continuity could not be conclusively determined because an extensive post-impact fire destroyed the overhead bellcrank, pulley, and interconnect system.