Well it’s been publicly released.
Northern Air Cargo has announced to retire their fleet of Boeing 737-200s in January of 2019. NAC has been flying the -200s for sometime now operating 3 of them around the State of Alaska. The reason why they kept the -200 for so long is due to the gravel kit operation which allows them to fly into St Mary’s Alaska a gravel runway. Northern Air Cargo operates the -300 series, a -400 and recently added the 767 to their list.