Primary finding
Probable cause
The vehicle operator's failure to maintain an adequate visual lookout.
Investigator assessment
Analysis narrative
The airplane had been pushed back from the gate and was taxiing out of the ramp area on the taxi line to its assigned taxiway when it was struck by a motor grader. The motor grader operator did not stop prior to entering the ramp area and was not in a vehicle lane at the time of the collision. The motor grader struck and lodged on its side under the left wing. There was reduced visibility due to fog at the airport.
Source record
Factual narrative
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