What evidence is there that anything unusual happened aboard TWA 800 at 31:12 according to the timing given on the ARTCC transcript?
ML/NJ
None that I'm aware of. But as I'm sure you are aware, pilots are trained that in the event of an emergency, making a radio broadcast is one of your last priorities. It would be very odd if someone made a radio call about witnessing an explosion the second TWA 800 blew up.