1.   And sometimes, there is little a controller can do to avert a crash if the pilot has turned onto the wrong runway, Swauger said.

2.   Singapore Airlines accepted full responsibility for the accident after the Taiwan Aviation Safety Council announced the pilot was on the wrong runway.

3.   Sometimes they are requested by pilots, other times by controllers, but they rarely occur because a plane is heading for the wrong runway, he said.

4.   A team from the National Transportation and Safety Board examined the wreckage Wednesday morning, trying to determine why the smaller aircraft had pulled onto the wrong runway.

5.   But he ruled out one theory of the disaster, saying the pilot had not somehow swerved onto the wrong runway.

6.   But investigators said that those problems were not the key probable causes of the crash because they did not lead the Singapore Airlines pilots to the wrong runway.

7.   But she ruled out one theory of the disaster, saying the pilot had not somehow swerved onto the wrong runway.

8.   Earlier Friday, Singapore Airlines said that if the aircraft was on the wrong runway, the company still needs to understand how this could have happened.

9.   Investigators confirmed for the first time Tuesday that it was the crane that ripped open the belly of the jumbo jet as it hurtled down the wrong runway.

10.   Investigators are still trying to figure out why the pilots decided to use the wrong runway.