As I haven't found a Sun-Air thread I thought about creating one as it is a pretty interesting small regional airline.
After 27 years the last flight of the Jetstream 31 was made on 1st April. Now there is only a Dornier Jet 328 fleet.
Source: In-flight magazine 02/2018
In-flight magazine | See our latest In-flight magazine | SUN-AIR In-flight Magazine - SUN-AIR of Scandinavia
Guess the Dornier can't fly forever, so they also have to think about a replacement of the 32-seat Dornier soon. I've found an article on ch-aviation (don't have to pro version) with a picture of the MRJ90, but can't imagine that this airplane fits in the business model of Sun-Air.
https://www.ch-aviation.com/portal/n...cement-options