[FReepaholic]

They had "burn-thru" on previous missions.

I recall photographing several over the years from 1988 to 1998 when I worked at the Cape. They were minor, yet they did "slag" the aluminum structure in places.

As I recall, the ones I shot occurred in the gap-filler area of the tiles. Perhaps missing or damaged gap-filler.

[XBob]

21 - "As I recall, the ones I shot occurred in the gap-filler area of the tiles. Perhaps missing or damaged gap-filler."

As I recall, gap filler problems were the reason the Russians shuttle couldn't safely fly.