Forgot This:
Yeah, the BAC 1-11 is a REAL SCREAMER! Still flying in South Africa and there is one in TN, that does special flights (I'm sure someone will YouTube it).
The Vickers Viscount also comes to mind for me...
But yeah, the 727 really did mark some better days in the airlines, and regarding Flaps 40, I always thought it was Flaps 45 or 50. I know the DC-9's (Diesel Niners) had Flaps 50, but they were locked out for the same reason.
And if you think the MD-80 is loud, I beg this question: Did you EVER fly in a DC-9, 727, Early 737 (include the 300, 400 and 500 series) or some other older plane? LOL! They were popular, thats for sure.
I personally think the 737 Classics (300-500 series) were the best. Loud, howling engines, a beaut rumble inside at takeoff. I actually flew an SAS 737-600 in 2009 thinking it was a 500. I suppose I should've realised when the flap motors were quiet, and there wasn't significant howling from the CFM-56's at takeoff.
Here is something else: Airbus A320's are already being retired. I believe the A319's Northwest Airlines originally started getting in '01 to replace DC-9's are reaching the end of their useful lives, yet the DC-9's have gone almost 20 years sine the big NW Refurb program designed to preserve the DC-9s.
Air-France retired their late 80s A320-100's (Without WInglets, less range and difference in Flight-Decks) in 2009 or so.
Another Question: I wonder if ANY French people on here (if any) Ever flew the Dassault-Brequet Mercure, a 737-200 copy-cat with super cruise speeds that couldn't fly out of France. Just 12 built, and costly at that. A complete, utter FAILURE!