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B742 / B744, Chicago O'Hare IL USA, 1999

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Category: Runway Incursion Runway Incursion
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On 1 April 1999, two Boeing 747s nearly collided on Rwy 14R at the Chicago O'Hare International Airport, USA when an aircraft which had just landed and cleared the runway failed to follow its taxi clearance and taxied back onto the active runway in front of another B747 on its take off roll. The departing aircraft rotated early, narrowly avoiding collision.


An Air China B747 had just landed and was rolling out on Rwy 14R (Figure 1) when the tower controller instructed a Korean Air B747 to taxi into position and hold. After Air China exited the runway at taxiway T10, the tower controller instructed the flight to turn left on taxiway Kilo and cross Rwy 27L. The tower controller then cleared Korean Air for takeoff. As the airplane was rolling down the runway, Air China deviated from its assigned taxi route and taxied on to Rwy 14R. The Korean Air captain saw the 747 taxiing on to the runway but it was too late to stop. Instead, the Korean Air B747 lifted off earlier than normal and banked left to avoid striking Air China. The two aircraft, carrying 382 people, missed colliding by about 80 feet.

KORD diagram.jpg

Figure 1. Chicago O'Hare airport - Basic layout

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