The ground collision occurred as one airplane, a Cessna 172, was in the run-up area at Seattle’s Boeing Field, while another airplane, a Gulfstream G280, was taxiing to an FBO.
The Gulfstream had landed and passed the turn for the FBO and was instructed by the ground controller to turn 180° and taxi to the FBO.
The pilots of both airplanes were aware of each other and confirmed they had each other in sight.
As the Gulfstream taxied past the Cessna, the right wing of the Gulfstream struck the left wing of the Cessna, which resulted in substantial damage to the left wing and aileron. The Gulfstream sustained minor damage to the right winglet leading edge.
Both pilots reported that there were no preaccident mechanical malfunctions or failures with the airplanes that would have precluded normal operation.
Probable Cause: The Gulfstream pilot’s failure to maintain clearance from the Cessna while taxiing that resulted in a ground collision.
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This September 2024 accident report is provided by the National Transportation Safety Board. Published as an educational tool, it is intended to help pilots learn from the misfortunes of others.
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