The Cause of the 777 Crash at Heathrow

BA038 crashed when it lost power on descent on January 17 of this year, and it appears now that the problem was caused by ice accumulation in the fuel system impeding fuel flow.

It flew over Siberia at relatively high altitudes and low fuel flows, and so ice accumulated, and when the throttle was added during descent, ice broke loose, and plugged the fuel lines.

If it wasn't a one in a million thing, it was close.

It's an interesting read.