A scare for South Dakota’s already aviation-wary residents came two days ahead of Halloween a half century ago when an engine on a regional airliner ensnared a flock of ducks during a descent into the Sioux Falls airport 50 years ago today.
And though tragedy was avoided — no one perished in the North Central Airlines emergency landing reported in the Oct. 30, 1975, edition of the Argus Leader — the close call stirred memories of earlier crashes that still ripple through South Dakota…