(CNN) — A distracted controller, along with a supervisor trying to fix a broken printer, led to two planes nearly colliding in 2023, a new report from the National Transportation Safety Board found.

Southwest Airlines Flight 2493 was waiting to take off on San Diego International Airport’s Runway 27, when controllers cleared a Cessna Citation private jet to land on the same runway, CNN reported at the time.

The Citation pilot saw the Southwest Boeing 737 and asked the tower what was going on.

“Verify 4HV is still clear to land?” asked the pilot of the Citation.

“Citation 4HV, go around. Fly the published missed approach,” the controller responded.

Now, the final investigative NTSB report illustrates what was happening in the air traffic control tower during those crucial moments.

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