Malaysian Airlines MH370 contact lost

[AAKEE]

I didn't realise their sensors were that good but..

Flight MH370: No explosion or crash detected, UN N-watchdog says - The Times of India

I'm aware of a c130 crash that was detected by seismological equipment that was positioned some 1000km from the crash. They did get the timing for the crash that way.

In the sea, possible the trippled or more distance though: Seems like a big task to find crash that way...