Originally Posted by
ildarin
Of course, enough dye to be useful in the open ocean would weigh enough to prevent the airplane from taking off.
THAT, I admit, would certainly prevent future accidents...
is that comment based on knowledge of the size and weight of a gel or solid block or just straight forward dismissive guess work/comment.
I googled various bits and wouldn't be surprised if the idea came from shark repellant dyes
reads this patent explanation seems they are getting a good time distance coverage from a bout 29 SMALL blocks of dye attached to a the diver
So upgrade them to the weight of a pax and what could you get, plus make the contents wax covered so they get dissolved at staged time periods.
Patent US4080677 - Portable diver distress signalling device - Google Patents