The 2007 San Francisco International Airport runway incursion occurred around 1:36 p.m. PDT on May 26, 2007, when SkyWest Airlines Flight 5741, an Embraer EMB 120 Brasilia turboprop aircraft, nearly collided with Republic Airways Flight 4912, an Embraer 170 Regional Jet, at the intersection of Runways 1L and 28R at San Francisco International Airport (SFO).

At the same time, the Republic Airways aircraft, bound for Los Angeles, was instructed to taxi into position and hold on the intersecting Runway 1L.

"[4][10] Of the previous 15 runway incursions at SFO between 2001 and 2007, none had been more serious than Category C,[11] which is defined as a situation in which "[s]eparation decreases but there is ample time and distance to avoid a potential collision.

"[10] Commenting on the seriousness of the incident, National Transportation Safety Board (NTSB) spokesman Ted Lopatkiewicz noted that "We investigate probably just a handful (of incursions) a year.

"[4] The NTSB's investigation was completed in November 2007, concluding that the controller had failed to provide adequate separation between the two aircraft.