Well WCBH, how about this for fact.
"The detection of a cracked fuel pipe on a 3rd aircraft (XV255) on 4th Sept 2006 (incident happened on 3rd, according to SFS) is well know to the ITP and this matter was addressed by UTI, RTI and F760 action as part of the initial reaction to the aircraft crash. Signed Nim ITPL"
Implication is that it was known about before the crash.
DV