Green Granite;
The fault that caused the crash [XV230] was not a hot air pipe by a fuel pipe.
DV
Yeah not direct ignition of fuel in a fuel pipe. The XV230 BOI deduced, albeit from the limited data available, that the probable causes were
(a) the escape of fuel during AAR, occasioned by an overflow from No 1 tank, or a leak from the fuel system (fuel coupling or pipe), leading to an accumulation of fuel within the No 7 tank dry bay; although of a lower probability, the fuel leak could have been caused by a hot air leak damaging fuel system seals; and
(b) the ignition of that fuel following contact with an exposed element of the aircraft's crossfeed/ SCP pipe work.