No-one's going to buy MD11s for passenger use, for me the final seal of disapproval on an aircraft that was always a bit dodgy (fuel burn, software, low speed instability, China Eastern incident, FedEx crash) was the Swissair fire.
Northwest are like a jet-age version of Save-A-Connie, aren't they? Preserving (kind of) all these old planes, DC9-30s and 747-100s. MEA of Lebanon probably attracted a few joyriders (myself included) because of their mint-condition passenger 707s (finally retired last year in favour of spiffy A320/321s, boo hoo). That leaves Northwest as the airline to go on if you want to ride on museum pieces (and be stranded for three days in Detroit, or open your barf-bag to use for trash and find it full of - yep this happened to me, BOS-LGW 747 Jan 93 - barf.)
fly Saha Air 707s daily from Tehran's downtown Mehrabad to Mashhad, Kish Island and Ahwaz