Ron Parsons wrote in message ...
In article ,
Minor nit..."Carrying" 400k? Surely you must mean a max t.o. weight?

Yes, the point was the efficiency of the wing. Which for the 767 is
designed to carry 500,000.

I guess they never developed into that weight becsause the 777 came
along
Typical payloads I see on those stage lengths is about 60-65k for a
767-200.

767-300.
The tanker will (its gonna happen because its an election year) be a
767-200.
The MC2 (which may well not get beyond the prototype) will be a -400
So what happens if either a 'bus or Boeing loses DC power? How far
will either likely fly then?

I've not heard of a DC power loss problem. Which airliner has this?
I should have framed the question this way:
How far would either aircraft fly if there is trouble in the E&E bay
that compromises the electrical system and you are down to DC
power...And then you lose even that?