[SharpEye]

Here is a theory to fit the facts.

Terrorist grabs stewardess, and demands captian open door to cabin, or he will activate bomb in cargo hold with his cell phone.

Captian refuses to open door,, and starts dumping fuel.

after 30 seconds terrorist activates bomb.

Kaboom

EVERY Cell phone is a potential radio activated detonator, it would be rather simple to rig up.

[jonno]

EVERY Cell phone is a potential radio activated detonator, it would be rather simple to rig up.

Maybe, but you'd sure hate to get a wrong number.

[Trust but Verify]

Sounds great. Except for one thing. How does a bomb in baggage knock off a wing and the tail? Wouldn't there have been baggage all over the place? Try again.

[null and void]

Then the pilot would have had time to flip the transponder to the hijack code.

(ooops! sorry, wrong number...)