It’s been asked. The main transmitter can be turned off by the pilot and often is when a hard landing is anticipated, so it doesn’t go off on a normal landing.
The other ones have to be manually turned on by the flight crew when a water landing is anticipated.
So neither of these are likely to be pinging since the flight crew was probably incapacitated and the pilot or copilot would have turned of the main transmitter.
This is all according to one of the “experts” on Fox who has usually made sense when he’s asked a question, answering primarily technical questions.
At what point were the pilots incapacitated and what was the cause? I cannot buy the fire explanation because they stayed aloft way too long.
This scenario seems to indicate a third party being the instigator, doesn't it? flat out hijacking. But, there is supposed to be a quick way to add that info to the transponder squawk. Isn't there?