[2] The awarding of the air mail route also brought NPA the ability to upgrade its fleet to Fokker Super Universals.
[3] By 1934 service was growing enough for the airline to upgrade its fleet with the acquisition of three ex-United Air Lines Boeing 247's.
[5] By 1937 National Parks Airways attracted the attention of the majors seeking to expand their route structures.
In 1937 Western acquired National Parks Airways, and the saga of the little airline in eastern Idaho came to an end.
The southbound flight from Great Falls to Salt Lake crashed at Pocatello, with the loss of all 7 passengers and crew aboard.