Exrigger: I think the warning was there with the XV227 incident, and very little was done. A defective pipe was replaced and we then went on flying using the SCP and a filled No. 7 tank. As soon as XV230 was lost we immediately isolate the SCP and No.7 tank. That had to done based on the data from XV227.
XV227 was the word of God, XV 230 was the flood, and MoD are still thinking about building the Ark.
DV