Estonia's Ministry of Interior has ordered a King Air 350i from Bromma Air Maintenance in Sweden. Bromma will purchase, modify and equip the King Air with an MSS 7000 maritime surveillance system from ST Airborne Systems. Once delivery, slated for mid-2018, has taken place it will be used by the Estonian Border Guard for environmental patrol and aerial surveillance of the Baltic Sea areas under Estonian responsibility.

The Border Guard has operated its MSS 6000 system on a LET 410 aircraft since 2007. Estonia will be the first country to use the MSS 7000.