The system used in the MRA4 is completely different to the MR2, in fact its common knowledge its the same system used in the Airbus. Its a complete new system that is nothing like the MR2. The piping that was the fault for the XV230 crash does not exist on the MRA4.
Correct
But there are those on these forums, Whitehall & journalists that only see the name "Nimrod" & tar the MRA4 with the same brush.
And another snippet in BAE's defense, if the MOD had allowed BAE to use a A320 fuse instead of using the old MR2 fuses MRA4 would have been flying years ago and Woodford would already be shut.