afaik the A330 MRTT does not make any structural mods or add anything internally in cargo or passenger cabin. it just relies on the intrinsic 110 tons of fuel. external refueling pods are added and internally the control station and cameras for the operator i guess.
so its a easy conversion from a passenger layout to the AAR mode - mostly ripping out the passenger cabin of all extra stuff and retuning the FCS for any changes in COG.
this should have been pursued years ago
the IL78 adds a palletized drum tank system inside its cargo bay due to paucity of intrinsic fuel but it can be removed and a/c converted back to cargo hauling or send off to russia for Phalcon structural mods if we want it that way. they will however need to change engines to PS90 as they have the old engines
http://www.airplane-pictures.net/images ... 7/5616.jpg
the RAF is already gone that route in 2011
http://www.defensenews.com/article/2011 ... -Refuelers
LONDON - Airbus Military has delivered the first of 12 A330-200 airliners due to be converted into in-flight refueling planes for the British Royal Air Force by Cobham Aviation Services.
The aircraft, part of an order of 14 jets, will be modified with aerial refueling pods and other equipment at Cobham's newly refurbished facility in Bournemouth, England. The first two aircraft have already been converted by Airbus in Spain.
The multirole tanker aircraft are being provided to the RAF under a private finance initiative service deal led by Airbus parent EADS.
Seven of the planes will be operated full time by the RAF. The remainder will be available for lease in the third-party market, with the proviso that they can be returned to British military service to meet any surge in demand.
All of the aircraft, to be known as the Voyager in RAF service, will be fitted with two wing-mounted refueling pods, while half the fleet will also be fitted for, but not necessarily with, a center-line mounted unit. The refueling units are being supplied by Cobham.
The first aircraft will become operational in a passenger and freight transport role by the end of this year to start relieving pressure on the RAF's hard-pressed assets.
Despite the increasing fragility of current RAF in-flight refueling operations, the new capability is not contracted to start being used in this role until 2015.
All 14 Voyagers are scheduled to be available for RAF operations by the middle of the decade. The A330 will replace the increasingly ancient Tristar and VC-10 refuelers now in service.