Above: the MD-81 at Amsterdam
In September 2009 SAS seems to be flying only just 2 MD-81 airliners
according to their website.
The fuel consumption of these airlines is 0,041 liter / seat km. Their
range is 1.400 km. They have 150 seats. See more images of the Sas MD-81
At the same time SAS was also flying 34 MD-82. These also have 150
seats, and the same fuel consumption, but their range is 2,400 km.
And SAS was flying 6 MD-87 with only 125 seats, with a fuel consumption
of 0,046 liter / seat km.