Why don't black boxes float?

[Buckrub]

Just wondering.

[BarryBobPosthole]

I know how to make a black box float.

All they need to do is ask me.

BKB

[Big Muddy]

Read somewhere in the last day or two, where it is being explored for the black box to be jettisoned, immediately before impact, away from the wreckage, and will float, also.

[Buckrub]

Well good.

Makes sense.

And I'm sure Posty could solve many world problems. I do wish he'd be asked. Honest.