Originally Posted by AndrewP
Caused by poorly bonded layer of rubber. Small pocket of air expends when heated and blows out the layer - something like the foam insulation getting blown off the Shuttle fuel tank, except it is reducing pressure outside rather than expension inside that causes the blow out.
Not to be nit-pickin but:
The foam insulation falls off the shuttle during launch because it's poorly bonded or the bonding has failed due to the super cold nature of the interface.
This is Africa, 1943. War spits out its violence overhead and the sandy graveyard swallows it up. Her name is King Nine, B-25, medium bomber, Twelfth Air Force. On a hot, still morning she took off from Tunisia to bomb the southern tip of Italy. An errant piece of flak tore a hole in a wing tank and, like a wounded bird, this is where she landed, not to return on this day, or any other day.