Fuel leak cause update
A report on the evening NHK News program showed the lastest report made by the Japanese Accident Investigators.
A rupture of 2-3 cm in size in the wing fuel tank was found that had been caused by a bolt lodged in the slat mechanism, which is surrounded by part of the fuel tank. It now appears that as the slat was retracted after landing the bolt was pushed back and pierced the tank allowing fuel to escape.
The orgin of this loose bolt has not yet been determined.
Attention has now switched from the pylon fuel line theory to this newly identified cause.
To answer Zazoo's question, a previous reported stated that the aircraft arrived with 5 tons of fuel remaining.
PTH