Pace,
I know what the Wikepedia article says; I read it before I posted the link!
My point is that readers should use caution with liferaft saying that the FMS will tell you the expected landing fuel. In the Hapag-Lloyd incident the crew relied on the FMS fuel calculations but were not aware that it was using stored date for clean cruise configuration at the actual altitude and speed they were flying hence they overestimated their max possible range and ran out of fuel before their planned landing airport!
There was not sufficient fuel to reach Munich, however, as the FMS was not designed to take into account the extra drag produced by a half-raised landing gear.
I was flying the Airbus when this accident happened and I recall we were all briefed and shown in our next sim how the FMS fuel calculations were inaccurate during gear down cruise.
That's all; just saying be careful out there!!
3 Point