The fact that there's only 8 in the fleet, makes them an oddball in the fleet. The aircraft can't be operated by MD
-80 crews without additional training, so this has left SAS with another pilot group for the MD
-90s, since there's only 8 in the fleet, it isn't a profitable aircraft for SAS.
With new interest in the market for used MD
-90s by Hello, Iran Air Tours etc. this is the right time for SAS to get rid of them.
As for the MD
-80s, SAS has reduced their fleet steadily, a lot of examples have gone to Allegiant Air. Allegiant seems to very happy with the former SK
models, and could get more in the future.
Personally, I think SAS have two options.
1. They keep their fleet as it is, maybe gradually getting rid of some of the older MD
-80s, but in essence it remains as it is. A complete fleet rollover only takes place when either Airbus or Boeing comes up with a 737replacement or A320NG.
get rid of their NG
's and MD
's, and go for the A320 series. SK
get rid of their A321s, and go for a complete NG
I also see a possibility for SK
going for the Embraer 170/175/190/195 sometime in the future.
"Looks like I picked the wrong week to quit sniffing glue." Steven McCroskey, Airplane!