| http://www.w3.org/ns/prov#value | - tac, tac, tac (similar to a machine gun) warning, pull back a little to go back to within limits.There was an incident, I believe it was an AA B727 that had a very scarry spyraling descent where the FDR went beyond the graph and there was speculation that it had gone beyond MACH 1 for a few secs.
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