There used to be 6 or so 744's parked in the desert that pmUA just couldn't sell. No idea if they were ever scrapped or current disposition. FAA still shows the certificates as "valid", I know I've seen other status on FAA as "scrapped, sold, exported, transfered etc".

Before I get flamed.... I know there is zero chance this could happen, as if those frames would need heavy checks, and pilot/crew training (just an all around impossible task). But its fun to dream about sitting on the upper deck of a UA 744-422 again, right?