All the Iberia 747s have associations with Air Atlanta in varying amounts.

There are 2 Iceland-registered 747-400s (TF-AMA and AMB), both built for Singapore Airlines in 1989 and passed on to Air Atlanta in 2004 when they were replaced by 777s. They operate the daily Havana flight and twice-daily services from Madrid to Tenerife (the latter an unusual assignment for such an aircraft). Both leave Madrid daily at 1700 for their respective destinations. Air Atlanta provide the flight deck crews and paint the aircraft up in Iberia colours. Iberia provide the cabin crew and specify service standards. As ever in such situations Iberia try to conceal the role of Air Atlanta as much as possible. I'm not certain whose insurance you will be on, Iberia's (Spanish law) or Air Atlanta's (Iceland law). Probably the latter, a variation on what is known in the industry as an ACMI deal.

http://www.airliners.net/open.file/771755/M/