1.   North Korea claimed that Hall had been spying but the United States has maintained all along that the intrusion was the result of a navigation error.

2.   The third was an American Airlines flight from Miami on approach to Cali last December, an accident attributed to a navigation error by the crew.

3.   NASA said the English-vs.-metric mixup apparently caused the navigation error.

4.   Police said the pilot was in training and entered Israeli skies due to a navigation error.

5.   Police spokesman Eric Bar-Chen said the pilot, in training, entered Israeli skies due to a navigation error.

6.   The accident is believed to have been caused by a navigation error, Rompress said, quoting the director of Constanta port, Constantin Tedorescu.

7.   The accident is believed to have been caused by a navigation error, Rompress said, quoting the director of Constanta port, Constantin Teodorescu.

8.   It was not clear whether the incident was the result of a navigation error by Russian planes, which have been staging bombing raids on Chechen separatist forces.