Certainly possible Judy, and just as valid as the many other hypotheses to have been brought forward.
Over land, yes. Over the high seas the US carriers face the same challenges as MH370. It was not that many years ago the North Atlantic was completely without coverage until ADS-C and CPDLC gave accurate, frequent position reports.
I would not hesitate to fly Malaysia Airlines tomorrow with my family. This unique, one-off event is exceptional. The old saying that driving to the airport is safer than your flight remains true...
Most of the world remains without radar or secondary coverage... most passengers assume they are being watched but that only takes place over land. Over water, you are on your own.
Not without a working, in-range cell tower.
Absolutely right! We need to lobby Congress to push forward the NextGen inititative that would provide significantly increased coverage for all aircraft via satellite. Money remains the problem, and with a sterling safety record the past decade, little attention has been paid to safety. MH370 may change that.
Even the FAA is not sure, but you've seen the relaxing of the use of PEDs in the past few months. This will continue as PEDs proliferate.
A system called ADS-B and time separation, relayed through Shanwick and Gander Oceanic control. If planes get too fast (or slow), the controlling agency issues a clearance to speed up or slow down. So yes, you are on your own for many minutes between reporting points, as much as 15-20 during winter. At 8 miles a minute, thats a lot of distance.
Plenty of speculation, but nothing concrete yet. The US has said it considers it a high priority, but the Malaysians have largely discounted the terrorism aspect.