The arcs released by the Malaysian government showing where the plane was at 8:11 a.m. on March 8 are probably accurate to within about 100 miles, Tim Farrar, president of Telecom, Media & Finance Associates of Menlo Park, California, said in an interview.
Interesting!
Until now, most people with a knowledge of Inmarsat operation, latency and other errors have said that the 'ping distance' is accurate to +/- 5 km. If this new estimate of +/- 100miles is true, then even the very limited conclusions that can be drawn from analysing the 5 previous ping arcs would become virtually useless as the arcs become even more 'blurred'.