On Jan 27th 2026, a Southwest Airlines Boeing 737-8 MAX dramatically rejected takeoff at San Antonio International Airport after air traffic control urgently canceled its clearance when an unauthorized aircraft entered the runway, narrowly avoiding a potentially catastrophic runway collision.
The aircraft, registered N8563Z and operating flight WN-4996 from San Antonio to Dallas Love Field, was accelerating down runway 22 when the tower controller suddenly realized a private light aircraft had moved onto the active runway. In a moment of extreme urgency, the controller blurted out a swear word over the frequency before instructing the Southwest crew to immediately cancel takeoff clearance. At the same time, another aircraft on final approach was ordered to go around.
Reacting instantly, the Southwest pilots initiated a rejected takeoff at approximately 90 knots groundspeed. The 737 MAX slowed safely and came to a stop on the runway without incident. After holding position briefly, the crew vacated the runway and taxied back to the hold-short line, where the aircraft underwent checks before being cleared to attempt departure again.
The incident caused significant disruption to the flight’s schedule. The aircraft had already been delayed by about 80 minutes before its first takeoff attempt, and the rejected takeoff added further delay. About 40 minutes later, after coordination with air traffic control and ensuring all conditions were safe, the flight departed normally and landed in Dallas with an overall delay of approximately two hours.
While no injuries occurred and the situation was resolved safely, the event highlighted how quickly runway incursions can escalate into high-risk scenarios. The split-second decision by both the controller and the flight crew prevented what could have been a serious accident, underscoring the critical importance of vigilance, clear communication, and rapid response during the most demanding phases of flight.
