"Brett" wrote in message
...
wrote:
| A number of posts mentioned that 747s are capable of in-flight
| refueling. Is this correct for 'all' 747s or just the particular
| military versions (E-4) & AF1? I suspect it would be unusual to see a
| civilian 747 doing so.

At a cost greater than $19 a gallon I don't believe any airline would
even consider it an option.



Today the limit with most civil aircraft is crew endurance anyway
but in times gone by it has been used for civil aircraft. In 1939
an Imperial Airways flying boat operated non stop across the
North Atlantic being refuelled in mid air by a converted Harrow
bomber operated by Flight Refuelling Ltd.

Keith