03/31/2010. William "Bill" A. Diehl formed the Arctic Aircraft Company at Anchorage in 1977 to produce the Arctic Tern, an updated version of the Interstate S-1A Cadet of the 1940s. A total of 31 aircraft (c/n 1002 to 1032) were produced till 1985. In the following ten years Diehl privately built four similar aircraft designated Diehl S-4 Arctic Privateer, all are still registered in Anchorage: N67H, N60AT, N4BZ and, N40VV (c/n 002 to 005).
The latter, N40VV, owned by Bill Diehl, made it recently to the headlines of the Anchorage Daily News on October 8, 2009. Due to engine problems, Diehl made his first time unplanned landing on the South Knik-Goose Bay Road, just 2 mls (3.2 km) south-east of his destination Wasilla Municipal Airport, after fixing the problem, the same road was used for takeoff.