[dirtboy]

As of the time of that release, the Air Force said NASA’s efforts so far to discover the cause of the foam shedding were unsuccessful.

So why don't they just up and change the material? We hear that even a raindrop can damage a tile, but the external fuel tank has been shedding bits for years and they don't change anything? Insane.

[fooman]

Its worse than that. The old foam did not shed and do the damage. It started happening when they used the new foam sans freon.

[fooman]

Its worse than that. The old foam did not shed and do the damage. It started happening when they used the new foam sans freon.