AoF, if I read the report correctly, when the aircraft crashed there was sufficient fuel in the tanks to keep the engines running and nothing the AAIB could find to prevent that fuel reaching the engines. Yet the engines flamed out through lack of fuel.
The report states:
In particular, the investigation will seek to determine why a situation arose that led to both
the helicopter’s engines flaming out when 76 kg of fuel remained in the fuel tank group,