On May 30, 2012, at about 1300 central daylight time, American Eagle Airlines flight 4265, an Embraer EMB-135, N834AE, was holding in the ramp area when it was struck by EVA Air flight 661, a Boeing 747-400, registration B16481, while the 747 was taxiing at Chicago O'Hare International Airport (ORD), Chicago, Illinois. The EMB-135 received substantial damage to its rudder and vertical stabilizer and the 747 received minor damage to its wingtip and slat. There were no injuries to any of the passengers or crew on either airplane. Visual meteorological conditions prevailed at the time of the accident.

The EMB-135 was holding in the ramp area with its tail protruding into taxiway (TWY) A while awaiting ground personnel to marshal them into gate G20. The 747 was initially parked at cargo bay SC6 and was instructed to taxi to runway 32L for departure. After crossing runway 28 and taxiing along TWY A, the 747 flight crew stated they saw the EMB-135 stopped short of gate G20. As the 747 approached the EMB-135, the captain stated that he knew it would be close and asked the other two flight crew members to help ensure there was enough wing tip clearance. Both of these crew members stated that there should be enough clearance based on their perspective in the cockpit. As the 747 taxied past the EMB-135, the leading edge slat of the B747 struck the vertical stabilizer of the EMB-135.