Monday, 10th of January, 1938

– United States of America

Northwest Airlines flight 2, a domestic scheduled passenger flight from Butte Airport, Montana (BTM/KBTM), to Billings Municipal Airport, Montana (BIL/KBIL), operated with a Lockheed 14-H Super Electra, registration NC17388, lost control and crashed after a structural failure of the tail due to tail flutter near Bozeman, Montana.

The two pilots and eight passengers perished. (10 fatalities)

– Cause:

“It is the opinion of the Investigating Board that the probable cause of this accident was a structural failure of the upper vertical fins and rudders due to flutter which resulted in a loss of control of the aircraft.”

– Report:…/uploads/2014/09/NC17388.pdf